Vulnerability | Breaking Cybersecurity News | The Hacker News

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Thursday added four security flaws to its Known Exploited Vulnerabilities ( KEV ) catalog, citing evidence of active exploitation in the wild. The list of vulnerabilities is as follows - CVE-2025-68645 (CVSS score: 8.8) - A PHP remote file inclusion vulnerability in Synacor Zimbra Collaboration Suite (ZCS) that could allow a remote attacker to craft requests to the "/h/rest" endpoint and allow inclusion of arbitrary files from the WebRoot directory without any authentication (Fixed in November 2025 with version 10.1.13 ) CVE-2025-34026 (CVSS score: 9.2) - An authentication bypass in the Versa Concerto SD-WAN orchestration platform that could allow an attacker to access administrative endpoints (Fixed in April 2025 with version 12.2.1 GA ) CVE-2025-31125 (CVSS score: 5.3) - An improper access control vulnerability in Vite Vitejs that could allow contents of arbitrary files to be returned to the bro...

Fortinet has officially confirmed that it's working to completely plug a FortiCloud SSO authentication bypass vulnerability following reports of fresh exploitation activity on fully-patched firewalls. "In the last 24 hours, we have identified a number of cases where the exploit was to a device that had been fully upgraded to the latest release at the time of the attack, which suggested a new attack path," Fortinet Chief Information Security Officer (CISO) Carl Windsor said in a Thursday post. The activity essentially mounts to a bypass for patches put in place by the network security vendor to address CVE-2025-59718 and CVE-2025-59719 , which could allow unauthenticated bypass of SSO login authentication via crafted SAML messages if the FortiCloud SSO feature is enabled on affected devices. The issues were originally addressed by Fortinet last month. However, earlier this week, reports emerged of renewed activity in which malicious SSO logins on FortiGate appliances...

A critical security flaw has been disclosed in the GNU InetUtils telnet daemon ( telnetd ) that went unnoticed for nearly 11 years. The vulnerability, tracked as CVE-2026-24061 , is rated 9.8 out of 10.0 on the CVSS scoring system. It affects all versions of GNU InetUtils from version 1.9.3 up to and including version 2.7. "Telnetd in GNU Inetutils through 2.7 allows remote authentication bypass via a '-f root' value for the USER environment variable," according to a description of the flaw in the NIST National Vulnerability Database (NVD). In a post on the oss-security mailing list, GNU contributor Simon Josefsson said the vulnerability can be exploited to gain root access to a target system - The telnetd server invokes /usr/bin/login (normally running as root) passing the value of the USER environment variable received from the client as the last parameter. If the client supply [sic] a carefully crafted USER environment value being the string "-f root...

Most of this week's threats didn't rely on new tricks. They relied on familiar systems behaving exactly as designed, just in the wrong hands. Ordinary files, routine services, and trusted workflows were enough to open doors without forcing them. What stands out is how little friction attackers now need. Some activity focused on quiet reach and coverage, others on timing and reuse. The emphasis wasn't speed or spectacle, but control gained through scale, patience, and misplaced trust. The stories below trace where that trust bent, not how it broke. Each item is a small signal of a larger shift, best seen when viewed together. Spear-phishing delivers custom backdoor Operation Nomad Leopard Targets Afghanistan Government entities in Afghanistan have been at the receiving end of a spear-phishing campaign dubbed Operation Nomad Leopard that employs bogus administrative documents as decoys to distribute a backdoor named FALSECUB by means o...

A new security flaw in SmarterTools SmarterMail email software has come under active exploitation in the wild, two days after the release of a patch. The vulnerability, which currently does not have a CVE identifier, is tracked by watchTowr Labs as WT-2026-0001 . It was patched by SmarterTools on January 15, 2026, with Build 9511 , following responsible disclosure by the exposure management platform on January 8, 2026. It has been described as an authentication bypass flaw that could allow any user to reset the SmarterMail system administrator password by means of a specially crafted HTTP request to the "/api/v1/auth/force-reset-password" endpoint. "The kicker of course being that said user is able to use RCE-as-a-feature functions to directly execute OS [operating system] commands," watchTowr Labs researchers Piotr Bazydlo and Sina Kheirkhah said. The problem is rooted in the function "SmarterMail.Web.Api.AuthenticationController.ForceResetPassword,"...