CVE-2016-6129

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.8%, top 48% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 7.5Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

The rsa_verify_hash_ex function in rsa_verify_hash.c in LibTomCrypt, as used in OP-TEE before 2.2.0, does not validate that the message length is equal to the ASN.1 encoded data length, which makes it easier for remote attackers to forge RSA signatures or public certificates by leveraging a Bleichenbacher signature forgery attack.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
52.0%
KEV
Not listed

Published

February 13, 2017

Last Modified

June 5, 2026

Advisory Details (3)

Auto-updated Jun 11, 2026
Patch available. Sources: redhat, github_commit.
generic

OP-TEE

https://www.op-tee.org/advisories/
github_commit Patch Available

commit 5eb9743410ce (libtom/libtomcrypt)

Patch available: libtom/libtomcrypt v1.18.0-rc1 (contains commit 5eb9743410ce)

https://github.com/libtom/libtomcrypt/commit/5eb9743410ce4657e9d54fef26a2ee31a1b5dd0
redhat Patch Available

1370955 – (CVE-2016-6129) CVE-2016-6129 libtomcrypt: possible OP-TEE Bleichenbacher attack

https://bugzilla.redhat.com/show_bug.cgi?id=1370955

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 14× in last 7d / 42× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-24 14:13 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2016-6129?
CVE-2016-6129 is a high vulnerability published on February 13, 2017. The rsaverifyhashex function in rsaverify_hash.c in LibTomCrypt, as used in OP-TEE before 2.2.0, does not validate that the message length is equal to the ASN.1 encoded data length, which makes it easier for remote attackers to forge RSA signatures or public certificates by leveraging a…
When was CVE-2016-6129 disclosed?
CVE-2016-6129 was first published in the National Vulnerability Database on February 13, 2017, with the most recent update on June 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2016-6129 actively exploited?
CVE-2016-6129 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 52.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2016-6129?
CVE-2016-6129 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2016-6129?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-6129, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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