TI-2026-06621 Aliases CVE-2026-7532 GHSA-h4jr-6mf9-63fq

iPAddress name constraints not enforced when WOLFSSL_IP_ALT_NAME is undefined

LOW 25CWE-295Published 2026-06-25 · Updated 2026-07-01

Key facts

Attack vector: Adjacent network
Privileges required: High
User interaction: None
Attack complexity: Low
Attack requirements: Present
Impact type: Spoofing
Confidentiality · integrity · availability: None · High · None
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-295.

Summary

iPAddress name constraints bypass when WOLFSSL_IP_ALT_NAME is not defined. IP address name constraints are not enforced in that configuration, allowing a certificate to bypass an issuing CA's IP address constraints.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00288 21st percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
wolfSSL	wolfSSL	up to 5.9.1	—	No fix listed	CNA

wolfSSL VendorwolfSSL Affected up to 5.9.1 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:wolfssl:wolfssl::::::::	before 5.9.2	Vulnerable	wolfSSL

cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:* Versions before 5.9.2 Vulnerable ·wolfSSL

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-7532
2026-10-03 Alias added: GHSA-h4jr-6mf9-63fq

References

Patch 1

https://github.com/wolfSSL/wolfssl/pull/10354

Advisory 1

https://www.wolfssl.com/docs/security-vulnerabilities/

TI-2024-00830 SEGV and out of bounds memory read from malicious packet CVSS 3.1CRITICAL 9.1
TI-2022-18557 In wolfSSL before 5.5.1, malicious clients can cause a buffer overflow during a TLS 1.3… CVSS 3.1HIGH 7.5
TI-2025-10943 Potential DoS Vulnerability through Multiple KeyShareEntry with Same Group in TLS 1.3 ClientHello CVSS 4.0MEDIUM 6.3
TI-2017-09737 wolfSSL Bleichenbacher/ROBOT CVSS 3.0HIGH 7.5
TI-2019-08902 wolfSSL 4.0.0 has a Buffer Overflow in DoPreSharedKeys in tls13.c when a current identity… CVSS 3.1CRITICAL 9.8
TI-2017-02021 Improper certificate validation in wolfSSL CVSS 3.1CRITICAL 9.8

See all 150 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences