CVE-2026-10098 | OCSP CertID serial-number length-confusion in wolfSSL_OCSP_r… | CVSS 6.3 MEDIUM

Description

OCSP CertID serial-number length-confusion in wolfSSL_OCSP_resp_find_status allows a same-issuer SingleResponse whose serial is a prefix of the target serial to be reported as the revocation status of a different certificate. The lookup compared serial-number bytes without first requiring the two serial numbers to be of equal length, so a SingleResponse for one certificate (same issuer) whose serial is a prefix of the target's serial would match, returning the wrong certificate's status. The fix requires the serial lengths to be equal before comparing the serial bytes.

Metadata

CVE ID: CVE-2026-10098
State: PUBLISHED
Assigner: wolfSSL
Reserved: 2026-05-29 15:03 UTC
Published: 2026-06-25 21:16 UTC
Last updated: 2026-06-25 21:16 UTC
Primary CWE: CWE-295
CWE-295 Improper Certificate Validation
Vendor / Product: wolfSSL / wolfSSL
Sources: cve.org · NVD

Severity & Metrics

6.3 MEDIUM CVSS 4.0

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

Affected products (1)

Vendor	Product	Platform	Versions
wolfSSL	wolfSSL	—	4.6.0 ≤ 5.9.1

Weakness (CWE)

CWE	Source	Description
CWE-295	cna	CWE-295 Improper Certificate Validation

CVSS scores (1)

Score	Severity	Version	Source	Vector
6.3	MEDIUM	4.0	cna	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

References (2)