CVE-2026-3229

MEDIUMNVD 5.55.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 5.5 from GitHub Security Advisory (severity: LOW) published 2026-03-19. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3

Also known asEUVD-2026-13208 (ENISA EUVD) · GHSA-6p64-86qj-33gc (GitHub Security Advisories)Source: ENISA EUVD

5.5EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: <0.1%CVSS: 5.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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.

CVSS v3
5.5
EG Score
5.5MEDIUMmedium confidence
EG Risk
25
EG Risk 25/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity55% × 45%
Impact severity (EG Severity): CVSS 5.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation<0.1% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
<0.1%
EPSS %ILE
below the 1st
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (5.5): severity, escalated by confirmed exploitation. This CVE's 5.5 is its impact severity (EG Severity), not escalated.

EG Severity
5.5 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
<0.1% within 30 daysSource: FIRST EPSS. FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

March 19, 2026

Last Modified

June 17, 2026

Advisory Details (1)

Auto-updated Aug 6, 2026
Patch available. Sources: github_pr.
GitHub pull request

Fix cert chain size issue

Fix merged in wolfSSL/wolfssl PR #9827 on 2026-02-25 — awaiting tagged release

https://github.com/wolfSSL/wolfssl/pull/9827

Vendor Advisories for CVE-2026-3229(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(5 across 5 ecosystems)
Alpine:v3.23(1)
PackageVulnerable rangeFix by version rangeDependents
wolfssl—
  • every version up to 5.9.1-r0: fixed in 5.9.1-r0
—
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
wolfssl—
  • every version up to 5.9.0-r0: fixed in 5.9.0-r0
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
wolfssl4.6.0+p1-0+deb11u1 ... 5.9.2-1 (40 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
wolfssl5.5.4-2 ... 5.9.2-1 (27 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
wolfssl5.7.2-0.1 ... 5.9.2-1 (14 versions)
  • every version on: no fix on record
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 1× in last 7d / 12× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed its CVE.org record (CNA or CISA ADP). An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

  1. 2026-11-08 16:39 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  2. 2026-10-31 16:32 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  3. 2026-10-30 22:25 UTCOSV refresh
  4. 2026-10-25 16:32 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  5. 2026-10-25 14:35 UTCEchelonGraph re-scored
  6. 2026-10-23 16:31 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  7. 2026-10-23 03:48 UTCEchelonGraph re-scored
  8. 2026-10-23 03:48 UTCGHSA enrichmentGHSA-6p64-86qj-33gc · GitHub severity LOW · GitHub CVSS 5.5
  9. 2026-10-22 16:34 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  10. 2026-10-18 16:32 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  11. 2026-10-18 03:47 UTCEchelonGraph re-scored
  12. 2026-10-17 16:34 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  13. 2026-10-16 16:42 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  14. 2026-10-15 16:32 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  15. 2026-10-14 16:32 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  16. 2026-10-13 16:34 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  17. 2026-10-12 16:34 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  18. 2026-10-12 16:14 UTCEchelonGraph re-scored
  19. 2026-10-11 19:56 UTCEchelonGraph re-scored
  20. 2026-10-11 17:10 UTCEchelonGraph re-scored
  21. 2026-10-11 14:38 UTCEchelonGraph re-scored
  22. 2026-10-11 13:48 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  23. 2026-10-11 08:25 UTCOSV refresh
  24. 2026-10-10 20:00 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  25. 2026-10-09 20:07 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
Show 40 more
  1. 2026-10-08 17:12 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  2. 2026-10-07 23:48 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  3. 2026-10-06 15:17 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  4. 2026-10-04 23:22 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  5. 2026-10-03 14:25 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  6. 2026-10-01 19:50 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  7. 2026-09-30 15:03 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  8. 2026-09-28 13:51 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  9. 2026-09-27 13:48 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  10. 2026-09-26 15:58 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  11. 2026-09-21 21:31 UTCOSV refresh
  12. 2026-09-16 14:08 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  13. 2026-09-11 14:53 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  14. 2026-09-11 09:37 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  15. 2026-09-08 22:00 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  16. 2026-09-04 05:06 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  17. 2026-09-02 17:38 UTCOSV refresh
  18. 2026-08-28 21:41 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  19. 2026-08-26 14:46 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  20. 2026-08-16 11:09 UTCGHSA enrichmentGHSA-6p64-86qj-33gc · GitHub severity LOW · GitHub CVSS 5.5
  21. 2026-08-14 07:19 UTCGHSA enrichmentGHSA-6p64-86qj-33gc · GitHub severity LOW · GitHub CVSS 5.5
  22. 2026-08-12 22:04 UTCGHSA enrichmentGHSA-6p64-86qj-33gc · GitHub severity LOW · GitHub CVSS 5.5
  23. 2026-08-11 06:54 UTCGHSA enrichmentGHSA-6p64-86qj-33gc · GitHub severity LOW · GitHub CVSS 5.5
  24. 2026-08-10 06:54 UTCGHSA enrichmentGHSA-6p64-86qj-33gc · GitHub severity LOW · GitHub CVSS 5.5
  25. 2026-08-09 06:53 UTCGHSA enrichmentGHSA-6p64-86qj-33gc · GitHub severity LOW · GitHub CVSS 5.5
  26. 2026-08-07 17:22 UTCEchelonGraph re-scored
  27. 2026-08-07 17:22 UTCGHSA enrichmentGHSA-6p64-86qj-33gc · GitHub severity LOW · GitHub CVSS 5.5
  28. 2026-08-06 13:46 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  29. 2026-08-06 01:33 UTCEchelonGraph re-scored
  30. 2026-08-06 01:33 UTCGHSA enrichmentGHSA-6p64-86qj-33gc · GitHub severity LOW · GitHub CVSS 5.5
  31. 2026-08-05 19:17 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  32. 2026-08-04 15:10 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  33. 2026-08-04 00:41 UTCGHSA enrichmentGHSA-6p64-86qj-33gc · GitHub severity LOW · GitHub CVSS 5.5
  34. 2026-08-02 16:33 UTCEchelonGraph re-scored
  35. 2026-08-02 16:33 UTCGHSA enrichmentGHSA-6p64-86qj-33gc · GitHub severity LOW · GitHub CVSS 5.5
  36. 2026-08-01 04:16 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  37. 2026-07-27 14:13 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  38. 2026-07-27 12:51 UTCEchelonGraph re-scoredFirst assessed: 5.5 MEDIUM
  39. 2026-07-27 12:51 UTCGHSA enrichmentGHSA-6p64-86qj-33gc · GitHub severity LOW · GitHub CVSS 5.5
  40. 2026-07-27 12:50 UTCOSV refresh

Frequently asked(5)

What is CVE-2026-3229?
CVE-2026-3229 is a medium-severity vulnerability; its CVE record was published on March 19, 2026. 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,…
When was the CVE record for CVE-2026-3229 published?
The CVE record for CVE-2026-3229 was published on March 19, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of June 17, 2026; the record at its source may have been updated since.
Is CVE-2026-3229 actively exploited?
CVE-2026-3229 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a <0.1% probability of exploitation in the next 30 days (below the 1st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-3229?
CVE-2026-3229 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-3229?
A fix for CVE-2026-3229 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-3229 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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