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Mozilla has released updates to address a critical security flaw impacting its Firefox browser for Windows, merely days after Google patched a similar flaw in Chrome that came under active exploitation as a zero-day. The security vulnerability, CVE-2025-2857, has been described as a case of an incorrect handle that could lead to a sandbox escape. "Following the recent Chrome sandbox escape (CVE-2025-2783), various Firefox developers identified a similar pattern in our IPC [inter-process communication] code," Mozilla said in an advisory. "A compromised child process could cause the parent process to return an unintentionally powerful handle, leading to a sandbox escape." The shortcoming, which affects Firefox and Firefox ESR, has been addressed in Firefox 136.0.4, Firefox ESR 115.21.1, and Firefox ESR 128.8.1. There is no evidence that CVE-2025-2857 has been exploited in the wild. The Tor Project has also shipped a security update for the Tor Browser (versio...

Google has released out-of-band fixes to address a high-severity security flaw in its Chrome browser for Windows that has been exploited in the wild as part of attacks targeting organizations in Russia.  The vulnerability, tracked as CVE-2025-2783   (CVSS score: 8.3), has been described   as a case of "incorrect handle provided in unspecified circumstances in Mojo on Windows." Mojo refers to a collection of runtime libraries that provide a platform-agnostic mechanism for inter-process communication (IPC). As is customary, Google did not reveal additional technical specifics about the nature of the attacks, the identity of the threat actors behind them, and who may have been targeted. The vulnerability has been plugged in Chrome version 134.0.6998.177/.178 for Windows. "Google is aware of reports that an exploit for CVE-2025-2783 exists in the wild," the tech giant acknowledged in a terse advisory. It's worth noting that CVE-2025-2783 is the first activel...

Google on Thursday unveiled a Password Manager PIN to let Chrome web users sync their passkeys across Windows, macOS, Linux, ChromeOS, and Android devices. "This PIN adds an additional layer of security to ensure your passkeys are end-to-end encrypted and can't be accessed by anyone, not even Google," Chrome product manager Chirag Desai said . The PIN is a six-digit code by default, although it's also possible to create a longer alpha-numeric PIN by selecting "PIN options." This marks a change from the previous status quo where users could only save passkeys to save passkeys to Google Password Manager on Android. While the passkeys could be used on other platforms, it was necessary to scan a QR code using the device where they were generated. The latest change removes that step, making it a lot easier for users to sign in to online services using passkeys by simply scanning their biometrics. Google noted that support for iOS is expected to arrive soon...

Google has announced that it's going to start blocking websites that use certificates from Entrust starting around November 1, 2024, in its Chrome browser, citing compliance failures and the certificate authority's inability to address security issues in a timely manner. "Over the past several years, publicly disclosed incident reports highlighted a pattern of concerning behaviors by Entrust that fall short of the above expectations, and has eroded confidence in their competence, reliability, and integrity as a publicly-trusted [ certificate authority ] owner," Google's Chrome security team said . To that end, the tech giant said it intends to no longer trust TLS server authentication certificates from Entrust starting with Chrome browser versions 127 and higher by default. However, it said that these settings can be overridden by Chrome users and enterprise customers should they wish to do so. Google further noted that certificate authorities play a privil...

Google has rolled out fixes to address a set of nine security issues in its Chrome browser, including a new zero-day that has been exploited in the wild. Assigned the CVE identifier  CVE-2024-4947 , the vulnerability relates to a type confusion bug in the V8 JavaScript and WebAssembly engine. It was reported by Kaspersky researchers Vasily Berdnikov and Boris Larin on May 13, 2024. Type confusion vulnerabilities  arise when a program attempts to access a resource with an incompatible type. It can have  serious impacts  as it allows threat actors to perform out-of-bounds memory access, cause a crash, and execute arbitrary code. The development marks the third zero-day that Google has patched within a week after  CVE-2024-4671  and  CVE-2024-4761 . As is typically the case, no additional details about the attacks are available and have been withheld to prevent further exploitation. "Google is aware that ...

Google on Monday shipped emergency fixes to address a new zero-day flaw in the Chrome web browser that has come under active exploitation in the wild. The high-severity vulnerability, tracked as  CVE-2024-4761 , is an out-of-bounds write bug impacting the V8 JavaScript and WebAssembly engine. It was reported anonymously on May 9, 2024. Out-of-bounds write bugs  could be typically exploited by malicious actors to corrupt data, or induce a crash or execute arbitrary code on compromised hosts. "Google is aware that an exploit for CVE-2024-4761 exists in the wild," the tech giant  said . Additional details about the nature of the attacks have been withheld to prevent more threat actors from weaponizing the flaw. The disclosure comes merely days after the company patched  CVE-2024-4671 , a use-after-free vulnerability in the Visuals component that has also been exploited in real-world attacks. With the latest fix, Google has...

Google has once again  pushed its plans  to deprecate third-party tracking cookies in its Chrome web browser as it works to address outstanding competition concerns from U.K. regulators over its Privacy Sandbox initiative. The tech giant said it's working closely with the U.K. Competition and Markets Authority (CMA) and hopes to achieve an agreement by the end of the year. As part of the new timeline, it aims to start phasing out third-party cookies early next year, making it the third such extension since the tech giant  announced  the plans in 2020, postponing it from  early 2022 to late 2023 , and again to the  second half of 2024 . Privacy Sandbox refers to a  set of initiatives  that offers privacy-preserving alternatives to tracking cookies and cross-app identifiers in order to serve tailored ads to users. While Google has since  enabled  the features to a subset of Chrome browser users...

Google has announced support for what's called a  V8 Sandbox  in the Chrome web browser in an effort to address memory corruption issues. The sandbox, according to V8 security technical lead Samuel Groß,  aims  to prevent "memory corruption in V8 from spreading within the host process." The search behemoth has  described  V8 Sandbox as a lightweight, in-process sandbox for the JavaScript and WebAssembly engine that's designed to mitigate common V8 vulnerabilities. The idea is to limit the impact of V8 vulnerabilities by restricting the code executed by V8 to a subset of the process' virtual address space ("the sandbox") and isolating it from the rest of the process. Shortcomings affecting V8 have accounted for a significant chunk of the zero-day vulnerabilities that Google has  addressed  between  2021  and  2023 , with as many as 16 security flaws discovered over the time period. "The sandbox assumes that an attacker can arb...

Google has agreed to purge billions of data records reflecting users' browsing activities to settle a class action lawsuit that claimed the search giant tracked them without their knowledge or consent in its Chrome browser. The  class action , filed in 2020, alleged the company misled users by tracking their internet browsing activity who thought that it remained private when using the "incognito" or "private" mode on web browsers like Chrome. In late December 2023, it  emerged  that the company had consented to settle the lawsuit. The deal is currently pending approval by the U.S. District Judge Yvonne Gonzalez Rogers. "The settlement provides broad relief regardless of any challenges presented by Google's limited record keeping," a court filing on April 1, 2024, said. "Much of the private browsing data in these logs will be deleted in their entirety, including billions of event level data records that reflect class members' private ...

Google on Wednesday rolled out fixes to address a new actively exploited zero-day in the Chrome browser. Tracked as  CVE-2023-5217 , the high-severity vulnerability has been described as a  heap-based buffer overflow  in the VP8 compression format in  libvpx , a free software  video codec  library from Google and the Alliance for Open Media (AOMedia). Exploitation of such buffer overflow flaws can result in program crashes or execution of arbitrary code, impacting its availability and integrity. Clément Lecigne of Google's Threat Analysis Group (TAG) has been credited with discovering and reporting the flaw on September 25, 2023, with fellow researcher Maddie Stone  noting  on X (formerly Twitter) that it has been abused by a commercial spyware vendor to target high-risk individuals. No additional details have been disclosed by the tech giant other than to acknowledge that it's "aware that an exploit for CVE-2023-5217 exists in the wild." T...

Google has announced plans to add support for quantum-resistant encryption algorithms in its Chrome browser, starting with version 116. "Chrome will begin supporting  X25519Kyber768  for establishing symmetric secrets in  TLS , starting in Chrome 116, and available behind a flag in Chrome 115," Devon O'Brien  said  in a post published Thursday. Kyber was  chosen  by the U.S. Department of Commerce's National Institute of Standards and Technology (NIST) as the candidate for general encryption in a bid to tackle future cyber attacks posed by the advent of quantum computing.  Kyber-768  is roughly the security equivalent of  AES-192 . The encryption algorithm has already been adopted by  Cloudflare ,  Amazon Web Services , and IBM. X25519Kyber768 is a hybrid algorithm that combines the output of  X25519 , an elliptic curve algorithm widely used for key agreement in TLS, and Kyber-768 to create a strong session key to en...

Google on Monday released security updates to patch a high-severity flaw in its Chrome web browser that it said is being actively exploited in the wild. Tracked as  CVE-2023-3079 , the vulnerability has been described as a type confusion bug in the V8 JavaScript engine. Clement Lecigne of Google's Threat Analysis Group (TAG) has been credited with reporting the issue on June 1, 2023. "Type confusion in V8 in Google Chrome prior to 114.0.5735.110 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page,"  according  to the NIST's National Vulnerability Database (NVD). The tech giant, as is typically the case, did not disclose details of the nature of the attacks, but  noted  it's "aware that an exploit for CVE-2023-3079 exists in the wild." With the latest development, Google has addressed a total of three actively exploited zero-days in Chrome since the start of the year - CVE-2023-2033  (CVSS score: 8.8) - Type Co...

Google on Wednesday said it obtained a temporary court order in the U.S. to disrupt the distribution of a Windows-based information-stealing malware called  CryptBot  and "decelerate" its growth. The tech giant's Mike Trinh and Pierre-Marc Bureau  said  the efforts are part of steps it takes to "not only hold criminal operators of malware accountable, but also those who profit from its distribution." CryptBot is estimated to have infected over 670,000 computers in 2022 with the goal of stealing sensitive data such as authentication credentials, social media account logins, and cryptocurrency wallets from users of Google Chrome. The harvested data is then exfiltrated to the threat actors, who then sell the data to other attackers for use in data breach campaigns. CryptBot was  first discovered  in the wild in December 2019. The malware has been traditionally delivered via maliciously modified versions of legitimate and popular software packages such as...

Google on Tuesday rolled out emergency fixes to address another actively exploited high-severity zero-day flaw in its Chrome web browser. The flaw, tracked as  CVE-2023-2136 , is  described  as a case of  integer overflow  in  Skia , an open source 2D graphics library. Clément Lecigne of Google's Threat Analysis Group (TAG) has been credited with discovering and reporting the flaw on April 12, 2023. "Integer overflow in Skia in Google Chrome prior to 112.0.5615.137 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page,"  according  to the NIST's National Vulnerability Database (NVD). The tech giant, which also fixed seven other security issues with the latest update, said it's aware of active exploitation of the flaw, but did not disclose additional details to prevent further abuse. The development marks the second Chrome zero-day vulnerability to be exploited by ma...

An unknown threat actor created malicious game modes for the Dota 2 multiplayer online battle arena (MOBA) video game that could have been exploited to establish backdoor access to players' systems. The modes exploited a  high-severity flaw  in the V8 JavaScript engine tracked as  CVE-2021-38003  (CVSS score: 8.8), which was  exploited as a zero-day  and addressed by Google in October 2021. "Since V8 was not sandboxed in Dota, the exploit on its own allowed for remote code execution against other Dota players," Avast researcher Jan Vojtěšek  said  in a report published last week. Following responsible disclosure to Valve, the game publisher  shipped fixes  on January 12, 2023, by upgrading the version of V8. Game modes are essentially  custom capabilities  that can either augment an existing title or offer completely new gameplay in a manner that deviates from the standard rules. While publishing a custom game mode to th...

Google on Wednesday officially rolled out support for passkeys, the next-generation authentication standard, to both Android and Chrome. "Passkeys are a significantly safer replacement for passwords and other phishable authentication factors," the tech giant  said . "They cannot be reused, don't leak in server breaches, and protect users from phishing attacks." The feature was  first announced  in May 2022 as part of a broader push to support a common passwordless sign-in standard. Passkeys, established by the FIDO Alliance and also backed by  Apple and Microsoft , aim to replace standard passwords with unique digital keys that are stored locally on the device. To that end, creating a passkey requires confirmation from the end-user about the account that will be used to log in to the online service, followed by using their biometric information or the  device   passcode . Signing in to a website on a mobile device is also a simple two-step process th...

Details have emerged about a recently patched critical remote code execution vulnerability in the V8 JavaScript and WebAssembly engine used in Google Chrome and Chromium-based browsers. The issue relates to a case of use-after-free in the instruction optimization component, successful exploitation of which could "allow an attacker to execute arbitrary code in the context of the browser." The flaw, which  was identified  in the Dev channel version of Chrome 101, was reported to Google by Weibo Wang, a security researcher at Singapore cybersecurity company  Numen Cyber Technology  and has since been quietly fixed by the company. "This vulnerability occurs in the instruction selection stage, where the wrong instruction has been selected and resulting in memory access exception," Wang said . Use-after-free flaws  occur  when previous-freed memory is accessed, inducing undefined behavior and causing a program to crash, use corrupted data, or even achieve e...

Cybersecurity researchers are calling attention to a free-to-use browser automation framework that's being increasingly used by threat actors as part of their attack campaigns. "The framework contains numerous features which we assess may be utilized in the enablement of malicious activities," researchers from Team Cymru  said  in a new report published Wednesday. "The technical entry bar for the framework is purposefully kept low, which has served to create an active community of content developers and contributors, with actors in the underground economy advertising their time for the creation of bespoke tooling." The U.S. cybersecurity company said it observed command-and-control (C2) IP addresses associated with malware such as  Bumblebee ,  BlackGuard , and  RedLine Stealer  establishing connections to the downloads subdomain of Bablosoft ("downloads.bablosoft[.]com"), the maker of the Browser Automation Studio (BAS). Bablosoft was previously...

Google's Threat Analysis Group (TAG) on Thursday pointed fingers at a North Macedonian spyware developer named Cytrox for developing exploits against five zero-day (aka 0-day) flaws, four in Chrome and one in Android, to target Android users. "The 0-day exploits were used alongside n-day exploits as the developers took advantage of the time difference between when some critical bugs were patched but not flagged as security issues and when these patches were fully deployed across the Android ecosystem," TAG researchers Clement Lecigne and Christian Resell  said . Cytrox is alleged to have packaged the exploits and sold them to different government-backed actors located in Egypt, Armenia, Greece, Madagascar, Côte d'Ivoire, Serbia, Spain, and Indonesia, who, in turn, weaponized the bugs in at least three different campaigns. The commercial surveillance company is the maker of  Predator , an implant  analogous  to that of NSO Group's  Pegasus , and is known to h...

Google on Wednesday took to its annual developer conference to announce a host of privacy and security updates, including support for virtual credit cards on Android and Chrome. "When you use autofill to enter your payment details at checkout, virtual cards will add an additional layer of security by replacing your actual card number with a distinct, virtual number," Google's Jen Fitzpatrick  said  in a statement. The goal, the search giant, said to keep payment information safe and secure during online shopping and protect users from  skimming attacks  wherein threat actors inject malicious JavaScript code to plunder credit card numbers and sell them on the black market. The feature is expected to roll out in the U.S. for Visa, American Express, Mastercard, and Capital One cards starting this summer. Interestingly, while Apple offers an option to mask email addresses via  Hide My Email , which enables users to create unique, random email addresses to use ...