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CVE-2026-3229

19
FAUCET Score

CVE-2026-3229 is an integer overflow vulnerability in the wolfSSL library's `wolfssl_add_to_chain` function, leading to heap corruption when handling certificate data, specifically impacting applications with certain 3rd party compatibility features enabled. Rated Medium (CVSS 5.5), this vulnerability requires local access and low privileges (AV:L/PR:L) to exploit, resulting in a high impact on availability (A:H) but no impact on confidentiality or integrity. It is not remotely exploitable, requiring compromise of the application context loading certificates. There is currently no evidence of active exploitation, with no public exploit code available on platforms like Metasploit or ExploitDB, and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.9.0CPE matchmatch criteria
cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

1.2LOW

CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Green

Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
NONE
VS Integrity
LOW
VS Availability
LOW
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
PROOF_OF_CONCEPT
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.06%
Probability of exploitation in next 30 days
EPSS Percentile
0.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0006 is in the 0th percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

microsoft2026-Mar/CVE-2026-3229Low

Integer Overflow in Certificate Chain Allocation

Mar 10, 2026

References

github.com / wolfSSL/wolfssl/pull/9827
Issue TrackingPatch