Buffer overflow in Wolfssl
CVE-2026-6325
Out-of-bounds write in SetSuitesHashSigAlgo when processing an oversized signature algorithms list, allowing a write past the bounds of the destination buffer.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.003 (19.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 19.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Wolfssl — versions 4.8.0
Weakness classification (CWE)
References
- github.com/wolfSSL/wolfssl/pull/10204 (Patch, patch, Issue Tracking)
- www.wolfssl.com/docs/security-vulnerabilities/ (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-6325?
- CVE-2026-6325 is a high-severity vulnerability in Wolfssl, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2026-06-25.
- How severe is CVE-2026-6325?
- High severity. CVSS v3 base score is 7.5 out of 10.