CVE-2026-5393 | BDVDB-2026-325977 Detail

wolfSSLwolfSSL

Description#

Dual-Algorithm CertificateVerify out-of-bounds read. When processing a dual-algorithm CertificateVerify message, an out-of-bounds read can occur on crafted input. This can only occur when --enable-experimental and --enable-dual-alg-certs is used when building wolfSSL.

Impact#

Per CVSS v4.0: confidentiality impact none, integrity impact low, availability impact low. Attack vector: network.

Weaknesses#

CWE-125 Out-of-bounds Read

References#

https://github.com/wolfSSL/wolfssl/pull/10079

Exploit#

No public exploit known

History#

Version 12026-04-09Record published in the CVE List.
Version 22026-04-10Most recent update recorded in the CVE List.

Published

Published: 2026-04-09
Last modified: 2026-04-10

Vendor information

Vendor: wolfSSL
Product: wolfSSL

All wolfSSL vulnerabilities

Score

6.3 Medium

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 10.1.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Memory Corruption

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 5.9.1
Fixed
5.9.1

Scoring System

CVSS v4.0

6.3 Medium

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Attack Requirements	Present
Privileges Required	None
User Interaction	None
Vulnerable System Confidentiality	None
Vulnerable System Integrity	Low
Vulnerable System Availability	Low
Subsequent System Confidentiality	None
Subsequent System Integrity	None
Subsequent System Availability	None

CVSS v3.1

Not available

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).