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CVE-2026-42014 medium CVSS 6.6

Vulnerability in GnuTLS (CVE-2026-42014)

Summary

Vulnerability in GnuTLS (CVE-2026-42014). Risk of unauthorized operations or information disclosure. Exploitable via gnutls_pkcs11_token_set_pin.

Original description

The description as published by the source.

A flaw was found in GnuTLS. The gnutls_pkcs11_token_set_pin function, used for changing the Security Officer PIN, can lead to a use-after-free vulnerability. This occurs when an attacker attempts to change the PIN with a NULL old PIN for a token that lacks a protected authentication path.

Source: NIST National Vulnerability Database NVD GitHub Advisory

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2026-42014 has been found in GnuTLS.
Attackers can target a specific entry point like gnutls_pkcs11_token_set_pin over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: 6.6/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "GnuTLS CVE-2026-42014" on the vendor's site.

CVE-2026-42014 (GnuTLS) — CWE-825 / CVSS v3 6.6
Attack vector: local / no user interaction
Attack surface: gnutls_pkcs11_token_set_pin
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

A vulnerability (CWE-825) exists in GnuTLS. Attackers reach the vulnerable code path via gnutls_pkcs11_token_set_pin.

📍 Affected scope

Check the vendor advisory for the affected versions of GnuTLS. Attack surface: gnutls_pkcs11_token_set_pin.

🔥 Severity

Severity: Medium (CVSS 6.6/10). Risk of unauthorized operations or information disclosure.

🔧 How to fix

Update to the patched release per vendor advisory.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'GnuTLS' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify exposure identify 
    grep -r 'GnuTLS' . | grep -v node_modules

    リポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で GnuTLS を grep し、稼働しているサービス・バージョンを把握する。

  2. 2
    Post-deployment verification verify 
    Confirm patched version is live in production

    パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

Fix status by distribution

Fixed packages published by each distribution for this CVE

References

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