CVE-2023-38538
A race condition in an event subsystem led to a heap use-after-free issue in established audio/video calls that could have resulted in app…
- Published
- Updated
- Reserved
- Assigned by
Description
A race condition in an event subsystem led to a heap use-after-free issue in established audio/video calls that could have resulted in app termination or unexpected control flow with very low probability.
Timeline
ID reserved
By facebook
- 3 months later
· 3 months later
Published
- 12 months later
· 12 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 |
|---|---|---|---|
| facebookCNA (assigner) | 3.1 | Medium5.0 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C |
| NVDNVD · Modified | 3.1 | Medium5.0 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L |
- EPSS (exploitation in 30 days)
- 0.23% · top 86% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.
Weakness
- CWE-416, CWE-366
- CWE-362 (opens in a new tab)All about CWE-362 and its CVEs
Affected products
Facebook · WhatsApp Desktop for Mac
- affected < 2.2338.12
Facebook · WhatsApp Desktop for Windows
- affected < 2.2320.2
Facebook · WhatsApp Business for iOS
- affected < 2.23.10.77
- affected < 2.23.10.77
Facebook · WhatsApp Business for Android
- affected < 2.23.10.77
Facebook · WhatsApp for Android
- affected < 2.23.10.77
References (1)
- https://www.whatsapp.com/security/advisories/2023/ (opens in a new tab)x_refsource_CONFIRMx_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-2023-38538)Record last updated .