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An attacker chained three zero-day flaws in Ivanti Connect Secure, a VPN appliance, to run commands as root without logging in, security firm  Volexity said  on October 13. Ivanti has released fixes for two of the flaws and told customers on affected versions to "act immediately." A fix for the third is still pending, according to Volexity. Volexity, which reported the flaws to Ivanti, found the attack on one customer's appliance. The appliance was fully patched at the time and running version 22.8R2.4. The attacker, which Volexity tracks as UTA0576, began exploiting it on October 3. Ivanti said  on October 13 that it is aware of "limited exploitation in the wild." The first two flaws are an authentication bypass and a remote code execution flaw, tracked together as  CVE-2026-104935 . Together they let an attacker run code as the appliance's cgi-server user, and the third flaw, a privilege escalation, raises that to root, Volexity said. The CVE reco...

Three vulnerabilities in LG's webOS can be chained to give an attacker on the same local network root access to certain smart TVs without a PIN or any interaction from the owner. LG has issued a fix, according to an advisory published by SSD Secure Disclosure on October 12. The chain was tested on two TV models, the 32LQ636BPSA and the 27TQ600SW, running webOS 7.5.7-25 on firmware 04.54.40. Whether other models or firmware versions are affected is not known. Owners of affected TVs should check for a firmware update. No workaround is available for those who cannot update yet. The attack enters through a service that the TV exposes on port 3001, which is used by the LG ThinQ app for pairing. An attacker replays a manifest from sync-demo, a built-in app already on the device, signed with a test certificate the firmware trusts. A permission in the manifest causes the pairing service to skip the PIN prompt and hand over a privileged key. With that key, the attacker laun...

Attackers took remote control of fridges and freezers at hundreds of French supermarkets on the night of October 11 and warmed them, forcing stores to throw food away, several retail chains said. The attackers reached them through the controller that runs all of a store's fridges and freezers, a device made by Danish company Danfoss that maintenance firms can manage remotely. Les Mousquetaires, which owns the Intermarché chain, said its fridges and freezers were put into defrost and heated to as much as 50°C. CERT-FR, the French government's computer emergency response team, said in an  alert published in French  on October 12 that it is aware of numerous compromises affecting two Danfoss controller series, the AK-SM and the AK-SC. It told operators to disconnect the controllers or filter access to them. CERT-FR is part of ANSSI, France's national cybersecurity agency. ANSSI's head, Vincent Strubel, called it urgent to take the two series off the internet or fil...

Some meetings last longer than it took attackers to jump on a newly disclosed security flaw this week. Within hours, they were already testing it. That's not much time to read the warning, let alone do something about it. But speed is only part of the problem. A secure connection didn't always mean a safe destination. People offering to fix a ransomware mess had questions to answer themselves. Malware got better at hiding its tracks. And some systems turned out to be easier to break into than anyone would like to admit. The odd part is how normal much of it looked until someone checked closer. There's more going on here than a few bad bugs and clever attacks. Some of the smaller stories are just as telling. This week's full recap is worth a read, especially the bits that didn't make the big headlines. ⚡ Threat of the Week Atlassian Flaw Exploited in the Wild — Threat actors have begun to exploit a newly disclosed critical security flaw impacting Atlassian...

Threat actors have been observed exploiting a recently disclosed critical security flaw in SonicWall Secure Mobile Access (SMA) 1000 appliances within days of public disclosure. The vulnerability, tracked as CVE-2026-102255 (CVSS score: 10.0), is a case of pre-authenticated server-side request forgery (SSRF) that could allow a remote attacker "to direct the appliance to issue requests on their behalf and reach internal functionality and perform unauthorized operations." Patches for the flaw were released by SonicWall on October 6, 2026, with versions 12.4.3-03670 (platform-hotfix) and 12.5.0-03082 (platform-hotfix). The vulnerability has since started witnessing active exploitation attempts, with first signs detected by threat intelligence firms Defused Cyber and Previdian on October 8, 2026. Data from Previdian shows that a total of 135 attempts have been observed to date from two unique IP addresses located in the U.S. SonicWall has yet to update the advisory ...

Four more U.S. states sued router maker TP-Link Systems on October 6, bringing the total to five, with   Texas filing a suit in February . Florida, Iowa, Montana and Nebraska allege the California company misled buyers about how secure its routers are and how separate it is from China. TP-Link  denies the claims  and says it will fight them in court. TP-Link Systems is based in Irvine, California. Until a 2024 restructuring, it was affiliated with TP-Link Technologies, a Chinese company that the suits do not name as a defendant. The complaints from  Florida ,  Montana  , and  Nebraska  do not allege that the Chinese government has obtained customers' data through TP-Link. They describe that as a risk under Chinese law. Separately, they say state-backed hackers have exploited flaws in TP-Link routers. Iowa's announcement is worded more strongly in places. Attorney General Brenna Bird's office said TP-Link firmware gives the Chinese governm...

Security researchers have  published a full working exploit  for a pre-authentication remote code execution flaw in AnyDesk Linux that gives attackers root access before anyone approves the connection. AnyDesk patched the flaw in version 8.0.3 in June, but its  changelog  described the fix only as "fixed a bug that could lead to a crash," with no CVE assigned and no security advisory. The exploit, called AnyPwn, targets a heap buffer overflow in AnyDesk's session protocol, a remote desktop tool. The code was released on GitHub on October 8. Administrators should update AnyDesk Linux to at least version 8.0.3. The latest release is 8.1.0. What the Exploit Demonstrates The published exploit works only over direct TCP connections on port 7070. The exploit is probabilistic: the heap layout must place a target object adjacent to the overflowed buffer; otherwise, the service crashes instead of executing the attacker's command. The offsets in the published code...

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Thursday added five security flaws to its Known Exploited Vulnerabilities ( KEV ) catalog, following their abuse by a China-linked threat actor known as Flax Typhoon. The vulnerabilities in question are listed below - CVE-2015-3306 (CVSS score: 10.0) - An improper access control vulnerability in ProFTPD that could allow remote attackers to read and write to arbitrary files via the site cpfr and site cpto commands. CVE-2021-3199 (CVSS score: 9.8) - A path traversal vulnerability in ONLYOFFICE Docs that can occur when JSON Web Token (JWT) is used, via a "/.." sequence in an image upload parameter and could allow for remote code execution. CVE-2023-22894 (CVSS score: 7.2) - A cleartext storage of sensitive information vulnerability in Strapi that could allow an attacker with access to the admin panel to discover sensitive user details via the query filter. CVE-2016-3081 (CVSS score: 8.1) - A...

A bug in GoBalance , a tool many dark-web sites use to stay reachable during attacks, lets anyone work out the secret key that controls a site's .onion address using only public information, and then take that address over. Searchlight Cyber, which  disclosed the flaw  on October 8, says an attacker who recovers the key can redirect the site's visitors to a copy of the site they control. Taking over the address does not grant the attacker access to the site's servers, database, or stored user data. How the Flaw Works An .onion address is really  a public key , so whoever holds the matching private key controls the address. To stay reachable, a site publishes a signed record, called a descriptor, that anyone on the Tor network can fetch, and GoBalance signs that record. The flaw is in the signing step. A Tor private key is  64 bytes  long, but GoBalance passed only the first 32 bytes to the signer and dropped the rest. The dropped half is the part that k...

Citrix has released patches for yet another critical security flaw impacting NetScaler ADC and NetScaler Gateway that could result in remote code execution or denial-of-service (DoS) under certain conditions. " CVE-2026-107406 is a memory overflow vulnerability that may lead to remote code execution or denial-of-service under specific configuration conditions," Citrix said. The vulnerability carries a CVSS score of 9.5 out of 10.0. There is no evidence that the issue has been exploited in the wild. Citrix has credited Michael Tucker, Chew Keong Tan, and Alex Bernier of the JPMorgan Chase XOR Team, along with Maxim Suhanov, for discovering and reporting the flaw. Successful exploitation hinges on the NetScaler deployments being configured as a SAML identity provider (IdP) or service provider (SP). Customers can determine if their instances meet the criteria by checking the configuration for entries like below - SAML SP: add authentication samlAction SAML IdP: ...

SonicWall has released hotfixes for four flaws in its SMA1000 appliances, the gateways that give remote workers access to a company's network and applications. The most serious could allow an attacker without a login to send requests through the appliance and reach internal functions. SonicWall rates it 10.0 on the CVSS scale and says it has no evidence that any of the four flaws is being used in attacks. The most serious flaw, tracked as  CVE-2026-102255 , is a server-side request forgery (SSRF) bug in WorkPlace, the portal that SMA1000 users log in to. It exists due to an unintended access path through SonicWall and can be reached before authentication. An attacker who abuses that path could "reach internal functionality and perform unauthorized operations," SonicWall said in its  security advisory , dated October 6, without saying which functions. All four flaws affect SMA1000 models 6210, 7210 and 8200v on these platform-hotfix versions:

The U.S. Federal Bureau of Investigation (FBI) and Secret Service (USSS) on Tuesday warned that the FortiBleed credential harvesting campaign remains an active threat aimed at internet-facing Fortinet FortiGate firewalls and secure socket layer (SSL) virtual private network (VPN) gateways. "The campaign exploits reused or leaked credentials and legacy SHA-256 password storage, enabling threat actors to harvest and crack authentication data at scale," the agencies said . "Initial findings indicate attackers are continuing to scan internet-exposed Fortinet firewalls using previously obtained compromised credentials." FortiBleed was first documented by SOCRadar and Hudson Rock in June 2026, with the activity targeting thousands of Fortinet firewalls as part of a global campaign. In all, the Russian-speaking operation is estimated to have netted more than 86,644 working device credentials spanning 194 countries as of June 19, 2026. "The scale under discus...

Linux backdoors targeting telecom and network appliances in South Korea and Taiwan have been disguising their traffic as email services and seemingly legitimate processes to blend in and evade detection. Threat actors are known to name their malicious software after a legitimate operating system component or a process as a defense evasion measure. By borrowing the name of a real binary, it may make it appear less conspicuous among other Windows processes, lend it a false sense of trust, or be overlooked by an analyst during casual inspection. However, the backdoors examined by Rapid7 have been found to go beyond imitating file names by assuming the identities of email security products like SpamSniper and ShareTech that are widely used in enterprise environments in South Korea and Taiwan. According to vendor Jiran Group, SpamSniper is advertised as "Korea's leading email security solution" that defends organizations against spam, malware, and server attacks. T...

A blank field. A public repo. One reply to an email. A box left exposed. None of this sounds dramatic, which is partly the problem. This week’s threats keep finding leverage in small things that were easy to overlook. There are actively exploited bugs in the mix, cleaner intrusion paths, smarter automation, and a long patch list waiting behind them. Some attacks are getting more capable. Others are still getting in because the basics gave way first. Here’s what mattered this week. ⚡ Threat of the Week Citrix Warns of Newly Exploited NetScaler ADC and Gateway Flaw — Citrix released security updates for a high-severity security flaw in NetScaler ADC and NetScaler Gateway that has been exploited as part of targeted zero-day attacks. The vulnerability, tracked as CVE-2026-88779, carries a CVSS score of 8.7 out of 10.0. "CVE-2026-88779 is a memory overflow vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway that can lead to denial-of-service under specific depl...

Threat actors have been observed attempting to exploit a now-patched critical security flaw impacting the Realtek Jungle software development kit (SDK) to deploy a botnet malware called Cling . "Cling is notable not because it introduces a new propagation technique, but because it repurposes ordinary STUN behavior into a practical command-and-control channel," Nozomi Networks said in a report published last week. "The result is a botnet whose traffic can resemble legitimate NAT-traversal activity while still supporting propagation, proxying, tunneling and denial-of-service commands." The operational technology (OT) security company said it observed a spike in attempts to exploit CVE-2021-35394 (CVSS score: 9.8), a critical remote code execution (RCE) flaw in Realtek Jungle SDK starting around September 5, 2026, with a subset of the activity delivering Cling. An analysis of the malware sample has found it to embed exploit logic for various command injectio...

Citrix has released security updates for a high-severity security flaw in NetScaler ADC and NetScaler Gateway that has been exploited as part of targeted zero-day attacks. The vulnerability, tracked as CVE-2026-88779 , carries a CVSS score of 8.7 out of 10.0. "CVE-2026-88779 is a memory overflow vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway that can lead to denial-of-service under specific deployment conditions," Citrix said . "The issue affects customer-managed NetScaler deployments running affected supported versions when the required preconditions are met." For successful exploitation, NetScaler ADC or NetScaler Gateway must be configured either as a SAML service provider (SP) or SAML identity provider(IdP). Customers can check if their NetScaler deployment meets the precondition by reviewing their configuration for entries matching the following - SAML SP - add authentication samlAction SAML IdP - add authentication samlIdPPro...

The U.S. Cybersecurity and Infrastructure Security Agency (CISA), on Thursday, added a critical security flaw impacting Fortinet FortiMail to its Known Exploited Vulnerabilities ( KEV ) catalog, following reports of active exploitation. The vulnerability, tracked as CVE-2026-104286 (CVSS score: 9.8), allows unauthenticated attackers to write arbitrary files on the underlying system. "An improper limitation of a pathname to a restricted directory ('path traversal') [CWE-22] and improper neutralization of NULL byte or NULL character [CWE-158] vulnerability may allow an unauthenticated attacker to write arbitrary files on the underlying system via crafted HTTP or HTTPS requests," Fortinet said in an advisory. The vulnerability impacts the following versions - FortiMail 8.0.0 through 8.0.1 (Upgrade to upcoming 8.0.2 or above) FortiMail 7.6.0 through 7.6.6 (Upgrade to upcoming 7.6.7 or above) FortiMail 7.4.0 through 7.4.8 (Upgrade to upcoming 7.4.9 or a...

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Wednesday added a critical authentication bypass flaw impacting Cisco Catalyst SD-WAN Manager to its Known Exploited Vulnerabilities ( KEV ), following reports of active exploitation. The vulnerability, tracked as CVE-2026-76504 (CVSS score: 9.8), could allow an unauthenticated, remote attacker to access an affected system with the privileges of the admin user. "Cisco Catalyst SD-WAN Manager contains a hex encoding vulnerability that could allow an unauthenticated, remote attacker to access an affected system with privileges of the admin user due to improper handling of URI encoding in an HTTP request," CISA said. Successful exploitation could allow an attacker to sidestep authentication by sending a crafted HTTP request to the API of the affected system, and gain access to the API as the admin user.

Threat actors have been observed exploiting a critical pre-authentication command injection vulnerability in Citrix NetScaler ADC and NetScaler Gateway to drop web shells and attempt theft of configuration data. LevelBlue's Threat Hunt Operations & Research (THOR) team, which analyzed the exploitation activity across multiple customer environments, said it identified malicious NetScaler authentication events containing attacker-controlled usernames designed to weaponize CVE-2026-88771. CVE-2026-88771 (CVSS score: 9.5) is an improper input validation vulnerability that could allow an unauthenticated attacker to execute arbitrary commands.  The security flaw, along with CVE-2026-88772, was disclosed last week after reports that the Dutch National Cyber Security Centre (NCSC-NL) reportedly sent a pre-notification to organizations in the Netherlands that urged organizations to shut their appliances down, citing active exploitation. As of writing, there are currently no d...

Attackers are exploiting a new critical zero-day flaw in Cisco Catalyst SD-WAN Manager, the system companies use to manage their Cisco SD-WAN networks, Cisco said in an  advisory  on September 30. The flaw, CVE-2026-76504 , could allow a remote attacker with no login access to use the Manager's API as the admin user. Fixed releases are available, and there is no workaround. It carries a CVSS score of 9.8 out of 10. It sits in the part of the Manager's API that handles login sessions. The Manager mishandles URI encoding in an HTTP request. A crafted request can therefore bypass an authentication rule intended to restrict access to a single API endpoint. The attacker needs no credentials, only the ability to send that request to the Manager's API. Managers exposed to the internet are at risk of compromise, according to Cisco. By default, the admin user holds the netadmin role, which is allowed to perform all operations on the device. Cisco said its Product Security I...