RHEL 7 : firefox (RHSA-2026:76741)

The remote Redhat Enterprise Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2026:76741 advisory. Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. Security Fixes: firefox:...

RHEL 8 : firefox (RHSA-2026:76746)

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2026:76746 advisory. Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. Security Fixes: firefox:...

RHEL 9 : firefox (RHSA-2026:76742)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:76742 advisory. Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. Security Fixes: firefox:...

KLA91320 SB vulnerability in Mozilla Firefox

Security bypass vulnerability was found in Mozilla Firefox. Malicious users can exploit this vulnerability to bypass security restrictions. Original advisories MFSA2026-104 Exploitation Related products Mozilla-Firefox CVE list CVE-2026-106016 critical Solution Update to the latest version Downlo...

Mozilla Firefox < 157.0.1

The version of Firefox installed on the remote macOS or Mac OS X host is prior to 157.0.1. It is, therefore, affected by a vulnerability as referenced in the mfsa2026-104 advisory. Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported versio...

SUSE SLES16: MozillaFirefox / MozillaFirefox-devel / etc (SUSE-SU-2026:23981-1)

The remote SUSE Linux SLES16 / SLESSAP16 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:23981-1 advisory. Update to Firefox Extended Support Release 153.4.0 ESR MFSA 2026-100, bsc1282929: - CVE-2026-96869: Information disclosure in the...

Mozilla Firefox < 157.0.1

The version of Firefox installed on the remote Windows host is prior to 157.0.1. It is, therefore, affected by a vulnerability as referenced in the mfsa2026-104 advisory. Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number...

Astra Linux – Vulnerability in Firefox

A memory safety bug has been fixed in Firefox 152. This vulnerability was addressed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12...

Astra Linux – Vulnerability in Firefox and Thunderbird

The application failed to account for exceptions thrown by the loadManifestFromFile method during add-on signature verification. This flaw, triggered by an invalid or unsupported extension manifest, could have caused runtime errors that disrupted the signature validation process. As a result, the...

Astra Linux – Vulnerability in Firefox, Thunderbird

A “paste” button on a clipboard could be present across tabs, allowing for a spoofing attack. This vulnerability affects Firefox 132, Firefox ESR 128.4, Thunderbird 128.4, and Thunderbird 132...

Astra Linux – Vulnerability in Firefox and Thunderbird

Due to a layout change, the contents of iframes might be rendered outside of their borders. This could lead to user confusion or spoofing attacks. This vulnerability affects Thunderbird 91.8, Firefox 99, and Firefox ESR 91.8...

Astra Linux – Vulnerability in Firefox

When downloading an HTML file, if the title of the page is formatted as a filename with a malicious extension, Firefox may save the file with that extension. This could lead to potential system compromise if the downloaded file is later executed. This vulnerability affects Firefox versions earlie...

Astra Linux – Vulnerability in Firefox and Thunderbird

Memory safety bugs exist in Firefox ESR 115.28, Firefox ESR 140.3, Thunderbird ESR 140.3, Firefox 143, and Thunderbird 143. Some of these bugs exhibited signs of memory corruption, and we assume that with sufficient effort, some of these bugs could have been exploited to execute arbitrary code...

[SECURITY] Fedora 43 Update: firefox-157.0-1.fc43

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance and portability...

[SECURITY] Fedora 44 Update: firefox-157.0-1.fc44

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance and portability...

[SECURITY] Fedora 45 Update: firefox-157.0-1.fc45

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance and portability...

SUSE SLES16: MozillaFirefox / MozillaFirefox-devel / etc (SUSE-SU-2026:23918-1)

The remote SUSE Linux SLES16 / SLESSAP16 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:23918-1 advisory. Update to Firefox Extended Support Release 153.3.0 ESR MFSA 2026-93, bsc1280371: - CVE-2026-92005: Use-after-free in the...

[slackware-security] mozilla-firefox

New mozilla-firefox packages are available for Slackware 15.0 and -current to fix security issues. Here are the details from the Slackware 15.0 ChangeLog: patches/packages/mozilla-firefox-140.17.0esr-i686-1slack15.0.txz: Upgraded. This update contains security fixes and improvements. For more...

CVE-2026-100765

creationtimestamp| type| source ---|---|--- 2026-09-29 20:00:00+00:00| seen| https://www.hkcert.org/security-bulletin/mozilla-firefox-multiple-vulnerabilities20260930 2026-10-01 20:00:00+00:00| seen| https://www.hkcert.org/security-bulletin/mozilla-thunderbird-multiple-vulnerabilities20261002...

CVE-2026-100798

creationtimestamp| type| source ---|---|--- 2026-09-29 20:00:00+00:00| seen| https://www.hkcert.org/security-bulletin/mozilla-firefox-multiple-vulnerabilities20260930 2026-10-01 20:00:00+00:00| seen| https://www.hkcert.org/security-bulletin/mozilla-thunderbird-multiple-vulnerabilities20261002...