valkey-io valkey Module Timer module.c moduleTimerHandler double free
33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 4.8epss 0.3%
exploitation probability
0.3%top 78% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
A vulnerability was determined in valkey-io valkey 9.1.0. Impacted is the function moduleTimerHandler of the file src/module.c of the component Module Timer Subsystem. This manipulation causes double free. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. Patch name: b349fe2821e3998534b1454c1b64a478daf8c6b7. To fix this issue, it is recommended to deploy a patch.
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Affected products
valkey-io · valkeypublic PoCs found — 1
cve_referencegithub.com/user-attachments/files/30118801/PoC.zipunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
https://github.com/user-attachments/files/30118801/PoC.ziphttps://github.com/valkey-io/valkey/https://github.com/valkey-io/valkey/commit/b349fe2821e3998534b1454c1b64a478daf8c6b7https://github.com/valkey-io/valkey/issues/4200https://github.com/valkey-io/valkey/pull/4211https://vuldb.com/cve/CVE-2026-82677https://vuldb.com/submit/893959https://vuldb.com/vuln/397172https://vuldb.com/vuln/397172/cti