Is CVE-2026-3229 in the CISA KEV catalog?

No. CVE-2026-3229 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-3229?

CVE-2026-3229 has a CVSS v3 base score of 5.5 (Low).

What is the EPSS score for CVE-2026-3229?

CVE-2026-3229 has an EPSS score of 0.06% (0th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-3229?

Upgrade wolfssl on debian unstable to 5.9.0-0.1 or later.

CVE & CISA-KEV Catalog

CVE-2026-3229

LOW

5.5

CVSS v3

NVD

Description

An integer overflow vulnerability existed in the static function wolfssl_add_to_chain, that caused heap corruption when certificate data was written out of bounds of an insufficiently sized certificate buffer. wolfssl_add_to_chain is called by these API: wolfSSL_CTX_add_extra_chain_cert, wolfSSL_CTX_add1_chain_cert, wolfSSL_add0_chain_cert. These API are enabled for 3rd party compatibility features: enable-opensslall, enable-opensslextra, enable-lighty, enable-stunnel, enable-nginx, enable-haproxy. This issue is not remotely exploitable, and would require that the application context loading certificates is compromised.

CWE-122Heap-based Buffer Overflow

How to fix

Remediation Available

wolfsslDebian

Fixed in:5.9.0-0.1CVE-2026-3229

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.06%probability of exploitation in 30 days

0thpercentile

Low risk: more likely to be exploited than 0% of all known CVEs.

References

Patch1

github.com

Related Vulnerabilities

Other CWE-122 (Heap-based Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2015-3113	Critical	9.8	100%	KEV	Fix
CVE-2024-26256	High	7.8	88%	-	Fix
CVE-2020-25687	Medium	5.9	87%	-	Fix
CVE-2009-3459	High	8.8	86%	KEV	Fix
CVE-2021-21017	High	8.8	86%	KEV	-
CVE-2020-25683	Medium	5.9	86%	-	Fix

Embed a live status badge for CVE-2026-3229

Markdown

[![CVE-2026-3229](https://tridentstack.com/cve/badge/CVE-2026-3229.svg)](https://tridentstack.com/cve/CVE-2026-3229)

HTML

<a href="https://tridentstack.com/cve/CVE-2026-3229"><img src="https://tridentstack.com/cve/badge/CVE-2026-3229.svg" alt="CVE-2026-3229"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-03-26.