VDB
CVE-2026-2646
CVE-2026-2646
PUBLISHED
CVSS 5 MEDIUM
A heap-buffer-overflow vulnerability exists in wolfSSL's wolfSSL_d2i_SSL_SESSION() function. When deserializing session data with SESSION_CERTS enabled, certificate and session id lengths are read from an untrusted input without bounds validation, allowing an attacker to overflow fixed-size buffers and corrupt heap memory. A maliciously crafted session would need to be loaded from an external source to trigger this vulnerability. Internal sessions were not vulnerable.
EPSS 0.04% · 12.2th percentile
Risk Scores
CVSS v4.0
5
CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
EPSS Score
0.04%
12.2th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| wolfssl | wolfssl | 0, 0, 0 |
Timeline
- Mar 19, 2026 CVE Published
- Mar 19, 2026 CVE Updated
- Mar 20, 2026 EPSS Score
- Mar 21, 2026 EPSS Score
- Mar 22, 2026 EPSS Score
- Mar 22, 2026 Coalition ESS Score
- Mar 23, 2026 EPSS Score
- Mar 24, 2026 EPSS Score
- Mar 25, 2026 EPSS Score
- Mar 29, 2026 Security Advisory
- May 18, 2026 EPSS Score
- May 19, 2026 EPSS Score