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The vulnerability of the Mozilla Firefox browser and the Thunderbird email client, related to reading data beyond the buffer in memory, allows attackers to compromise the confidentiality and integrity of protected information.

🗓️ 29 Aug 2025 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec
 bdu_fstec🔗 bdu.fstec.ru👁 1 Views

Buffer overread in Mozilla Firefox and Thunderbird risks confidentiality and integrity of data.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
FreeBSD		Mozilla -- stack memory read
1 Apr 202500:00
–freebsd
AlpineLinux		CVE-2025-3031
1 Apr 202513:15
–alpinelinux
AstraLinux		Astra Linux – Vulnerability in Firefox
16 Jun 202511:28
–astralinux
Chainguard		CVE-2025-3031 vulnerabilities
7 Jan 202601:29
–cgr
Circl		CVE-2025-3031
1 Apr 202513:00
–circl
CNNVD		Mozilla Firefox和Mozilla Thunderbird 信息泄露漏洞
1 Apr 202500:00
–cnnvd
CVE		CVE-2025-3031
1 Apr 202512:29
–cve
Cvelist		CVE-2025-3031 JIT optimization bug with different stack slot sizes
1 Apr 202512:29
–cvelist
Debian CVE		CVE-2025-3031
1 Apr 202512:29
–debiancve
EUVD		EUVD-2025-9301
3 Oct 202520:07
–euvd
Rows per page
Vulners
Node
mozillafirefoxRange<137
OR
mozillathunderbirdRange<137
SourceLink
mozillawww.mozilla.org/security/advisories/mfsa2025-20/
mozillawww.mozilla.org/security/advisories/mfsa2025-23/
wikiwww.wiki.astralinux.ru/astra-linux-se18-bulletin-2025-0811SE18
wikiwww.wiki.astralinux.ru/astra-linux-se17-bulletin-2025-0923SE17
altspwww.altsp.su/obnovleniya-bezopasnosti/
xn--80ahaefyxhnwww.xn--80ahaefyxhn.xn--j1afgaq.xn--p1ai/bin/view/%D0%9E%D0%A1%D0%BD%D0%BE%D0%B2%D0%B0/%D0%9E%D0%B1%D0%BD%D0%BE%D0%B2%D0%BB%D0%B5%D0%BD%D0%B8%D1%8F/2.14/
wikiwww.wiki.astralinux.ru/astra-linux-se47-bulletin-2025-1020SE47
wikiwww.wiki.astralinux.ru/astra-linux-se16-bulletin-20251225SE16
xn--80ahaefyxhnwww.xn--80ahaefyxhn.xn--j1afgaq.xn--p1ai/bin/view/%D0%9E%D0%A1%D0%BD%D0%BE%D0%B2%D0%B0/%D0%9E%D0%B1%D0%BD%D0%BE%D0%B2%D0%BB%D0%B5%D0%BD%D0%B8%D1%8F/3.1/
webwww.web.nvd.nist.gov/view/vuln/detail
Rows per page

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04 Mar 2026 00:00Current
6.5Medium risk
Vulners AI Score6.5
CVSS 26.4
CVSS 36.5
EPSS0.00262
Mozilla FirefoxThunderbirdBuffer overreadData confidentialityData integrity
1