---
title: "CVE-2026-95208: wolfSSL - Denial of Service"
description: "wolfSSL v5.9.1 and v5.9.2 contain a denial of service caused by improper handling in ConfirmNameConstraints() function when processing crafted Certificate Authority certificates, letting attackers cause valid certificates without SAN to be rejected, exploit requires crafted CA certificates."
url: https://panop.io/threat-heartbeat/CVE-2026-95208/
---

# CVE-2026-95208 wolfSSL - Denial of Service

wolfSSL v5.9.1 and v5.9.2 contain a denial of service caused by improper handling in ConfirmNameConstraints() function when processing crafted Certificate Authority certificates, letting attackers cause valid certificates without SAN to be rejected, exploit requires crafted CA certificates.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

None known

EPSS

0.17% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-95208)

## Details

Type

Denial of Service

Impact

Denial Of Service

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Published

8 October 2026

Updated

15 October 2026

Weakness

[CWE-295](https://cwe.mitre.org/data/definitions/295.html)

## Vendor fix

Update to a version later than v5.9.2 or the latest available version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-95208](https://nvd.nist.gov/vuln/detail/CVE-2026-95208)
- [http://wolfssl.com](http://wolfssl.com/)
- [https://gist.github.com/lkloliver/14edf8bbfbf5769949b85c7f5cc2eba2](https://gist.github.com/lkloliver/14edf8bbfbf5769949b85c7f5cc2eba2)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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