Back
CVE-2023-5728
During garbage collection extra operations were performed on a object that should not be. This could have led to a potentially exploitable…
High7.5EPSS 1.3%
- Published
- Updated
- Reserved
- Assigned by
- mozilla
Description
During garbage collection extra operations were performed on a object that should not be. This could have led to a potentially exploitable crash. This vulnerability affects Firefox < 119, Firefox ESR < 115.4, and Thunderbird < 115.4.1.
Timeline
ID reserved
By mozilla
- 1 day later
· 1 day later
Published
- 16 months later
· 16 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 1.3% · top 29% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
- Improper object tracking during GC in the JavaScript engine could have led to a crash.
- CWE-416 Use After Free (opens in a new tab)All about CWE-416 and its CVEs
Affected products
- affected unspecified – < 119
- affected unspecified – < 115.4
- affected unspecified – < 115.4.1
References (8)
- https://bugzilla.mozilla.org/show_bug.cgi?id=1852729 (opens in a new tab)x_transferred
- https://www.mozilla.org/security/advisories/mfsa2023-45/ (opens in a new tab)x_transferred
- https://www.mozilla.org/security/advisories/mfsa2023-46/ (opens in a new tab)x_transferred
- https://www.mozilla.org/security/advisories/mfsa2023-47/ (opens in a new tab)x_transferred
- https://www.debian.org/security/2023/dsa-5535 (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2023/10/msg00037.html (opens in a new tab)x_transferred
- https://www.debian.org/security/2023/dsa-5538 (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2023/10/msg00042.html (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-5728)Record last updated .