🛡️ CVE-2023-6862
🟠 CVSS 8.8 — High ✅ No Known Exploit CWE-416 NVD
8.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

A use-after-free was identified in the `nsDNSService::Init`. This issue appears to manifest rarely during start-up. This vulnerability affects Firefox ESR < 115.6 and Thunderbird < 115.6.

Details

Severity HIGH
CVSS Score 8.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE CWE-416
Public Exploit ✅ No
Source NVD
Published 2023-12-19
Updated 2026-06-08
Modified 2024-11-21
Fix URL N/A

Affected Packages

Software From version Fixed in
debian-linux
firefox-esr 115.6
thunderbird 115.6

References

Issue Tracking, Permissions Required https://bugzilla.mozilla.org/show_bug.cgi?id=1868042
Issue Tracking, Permissions Required https://bugzilla.mozilla.org/show_bug.cgi?id=1868042

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