CVE-2025-8035

24

FAUCET Score

CVE-2025-8035 is a high-severity memory safety vulnerability affecting Mozilla Firefox and Thunderbird, including their ESR versions. These bugs, present in specific versions, could lead to memory corruption and potentially arbitrary code execution if exploited. With a CVSS score of 8.8, it presents a significant risk due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered some community discussion and media coverage, indicating awareness within the cybersecurity community.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		< 128.13.0CPE matchmatch criteria	cpe:2.3:a:mozilla:firefox:::::esr:::*
		< 141.0CPE matchmatch criteria	cpe:2.3:a:mozilla:firefox:::::-:::*
		>= 140.0, < 140.1.0CPE matchmatch criteria	cpe:2.3:a:mozilla:firefox:::::esr:::*
		< 128.13.0CPE matchmatch criteria	cpe:2.3:a:mozilla:thunderbird:::::esr:::*
		< 141.0CPE matchmatch criteria	cpe:2.3:a:mozilla:thunderbird:::::-:::*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

Exploitability Score

2.8

Impact Score

5.9

CvssVersion

3.1

Exploit Intelligence

EPSS Score

0.32%

Probability of exploitation in next 30 days

EPSS Percentile

24.7%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0032 is in the 30th percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (32)

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 10Fixed in: firefox-0:128.13.0-1.el10_0

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 10Fixed in: thunderbird-0:128.13.0-3.el10_0

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7 Extended Lifecycle SupportFixed in: firefox-0:128.13.0-1.el7_9

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8Fixed in: firefox-0:128.13.0-1.el8_10

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8Fixed in: thunderbird-0:128.13.0-3.el8_10

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.2 Advanced Update SupportFixed in: firefox-0:128.13.0-1.el8_2

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.2 Advanced Update SupportFixed in: thunderbird-0:128.13.0-3.el8_2

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportFixed in: firefox-0:128.13.0-1.el8_4

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportFixed in: thunderbird-0:128.13.0-3.el8_4

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnFixed in: firefox-0:128.13.0-1.el8_4

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnFixed in: thunderbird-0:128.13.0-3.el8_4

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportFixed in: firefox-0:128.13.0-1.el8_6

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportFixed in: thunderbird-0:128.13.0-3.el8_6

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceFixed in: firefox-0:128.13.0-1.el8_6

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceFixed in: thunderbird-0:128.13.0-3.el8_6

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionsFixed in: firefox-0:128.13.0-1.el8_6

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionsFixed in: thunderbird-0:128.13.0-3.el8_6

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceFixed in: firefox-0:128.13.0-1.el8_8

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceFixed in: thunderbird-0:128.13.0-3.el8_8

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsFixed in: firefox-0:128.13.0-1.el8_8

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsFixed in: thunderbird-0:128.13.0-3.el8_8

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 9Fixed in: firefox-0:128.13.0-1.el9_6

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 9Fixed in: thunderbird-0:128.13.0-3.el9_6

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsFixed in: firefox-0:128.13.0-1.el9_0

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsFixed in: thunderbird-0:128.13.0-3.el9_0

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsFixed in: firefox-0:128.13.0-1.el9_2

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsFixed in: thunderbird-0:128.13.0-3.el9_2

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 9.4 Extended Update SupportFixed in: firefox-0:128.13.0-1.el9_4

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 9.4 Extended Update SupportFixed in: thunderbird-0:128.13.0-3.el9_4

mozillavendor investigatingvia nvd_reference

redhatno patchvia redhat_api

Product: Red Hat Enterprise Linux 10Fixed in: rhel10/firefox-flatpak

redhatno patchvia redhat_api

Product: Red Hat Enterprise Linux 10Fixed in: rhel10/thunderbird-flatpak

Vendor Advisories (1)

redhatCVE-2025-8035Important

firefox: thunderbird: Memory safety bugs

References

lists.debian.org / debian-lts-announce/2025/07/msg00016.html

bugzilla.mozilla.org / show_bug.cgi

mozilla.org / security/advisories/mfsa2025-56

Vendor Advisory

mozilla.org / security/advisories/mfsa2025-58

Vendor Advisory

mozilla.org / security/advisories/mfsa2025-59

Vendor Advisory

mozilla.org / security/advisories/mfsa2025-61

Vendor Advisory

mozilla.org / security/advisories/mfsa2025-62

Vendor Advisory

mozilla.org / security/advisories/mfsa2025-63

Vendor Advisory