# CVE-2026-82677

## Summary

- **CVE ID:** CVE-2026-82677
- **Severity:** MEDIUM
- **CVSS Score:** 4.8 (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)
- **CWE:** CWE-415, CWE-119
- **Published:** Aug 31, 2026
- **Last Modified:** Aug 31, 2026

## Description

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.

## Affected Products

- valkey-io — valkey (9.1.0)

## References

- [CNA](https://vuldb.com/vuln/397172)
- [CNA](https://vuldb.com/vuln/397172/cti)
- [CNA](https://vuldb.com/cve/CVE-2026-82677)
- [CNA](https://vuldb.com/submit/893959)
- [CNA](https://github.com/valkey-io/valkey/issues/4200)
- [CNA](https://github.com/valkey-io/valkey/pull/4211)
- [CNA](https://github.com/user-attachments/files/30118801/PoC.zip)
- [CNA](https://github.com/valkey-io/valkey/commit/b349fe2821e3998534b1454c1b64a478daf8c6b7)
- [CNA](https://github.com/valkey-io/valkey/)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.29%
- **EPSS Percentile:** 21.2

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._