CVE-2015-3308

Double free vulnerability in lib/x509/x509_ext.c in GnuTLS before 3.3.14 allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted CRL distribution point.

Published: 2015-09-02 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-3308 is rated Moderate Risk (63.7/100): CVSS High severity, with medium exploitation likelihood (EPSS 3.92%). EPSS rose +2.53% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2015-3308

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 1.39% 3.92% +2.53%
2 2025-03-30 2.50% 1.39% -1.10%
3 2025-03-29 — 2.50% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-3308

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2015-3308

OS Trackers for CVE-2015-3308

vendor priority summary link
debian not yet assigned CVE-2015-3308 not yet assigned priority: Debian including 1 source packages (gnutls28), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2015-3308
gentoo normal CVE-2015-3308: 1 GLSA(s) (201506-03), 1 atom(s) (net-libs/gnutls); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2015-3308
redhat medium — https://access.redhat.com/security/cve/CVE-2015-3308
ubuntu low CVE-2015-3308 low priority: Ubuntu including 2 source packages (gnutls26, gnutls28), 12 status rows across 6 suites (lucid, precise, trusty, upstream, utopic, vivid): not-affected 7, DNE 3, released 2. https://ubuntu.com/security/CVE-2015-3308

NVD evaluator notes for CVE-2015-3308

Comment: <a href="http://cwe.mitre.org/data/definitions/415.html">CWE-415: Double Free</a>

Affected software / configurations for CVE-2015-3308

Vendor Product Version Raw CPE
gnu gnutls <= 3.3.13 cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:*
canonical ubuntu_linux 15.04 cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:*

References for CVE-2015-3308

cvelogic Threat Intelligence