DEBIAN-CVE-2023-5176

Advisory lineage Upstream: 1 Downstream: 4
Upstream
CVE-2023-5176
Published: 27 Sept 2023, 15:19
Last modified:20 Nov 2025, 10:16

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.8 CRITICAL
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

27 Sept 2023, 15:19
Published
Vulnerability first disclosed
20 Nov 2025, 10:16
Last Modified
Vulnerability information updated

Description

Memory safety bugs present in Firefox 117, Firefox ESR 115.2, and Thunderbird 115.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 118, Firefox ESR < 115.3, and Thunderbird < 115.3.

CVSS Metrics

  • v3.1•CRITICAL•Score: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Systems

  • debian•firefox-esr

    < 115.3.0esr-1~deb11u1 | < 115.3.0esr-1~deb12u1 | < 115.3.0esr-1 | < 115.3.0esr-1

  • debian•thunderbird

    < 1:115.3.1-1~deb11u1 | < 1:115.3.1-1~deb12u1 | < 1:115.3.0-1 | < 1:115.3.0-1

References (1)