What is CVE-2015-2806?

CVE-2015-2806 is a vulnerability in GNU Libtasn1, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2015-04-10.

Is CVE-2015-2806 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in GNU Libtasn1

CVE-2015-2806

Stack-based buffer overflow in asn1_der_decoding in libtasn1 before 4.4 allows remote attackers to have unspecified impact via unknown vectors.

Vulnerability class: Buffer Overflow

Published 2015-04-10 · last modified 2026-06-17.

CVSS v2 metric

CVSS v2 base score 10.0 (High). Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.077 (94.4th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 94.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.077 · newest: 0.077 · change: 0.000

Affected products

GNU Libtasn1
Canonical Ubuntu Linux — versions 10.04, 12.04, 14.04
Debian Linux — versions 7.0
Fedoraproject Fedora — versions 20, 21, 22

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

Public proof-of-concept exploits

References

www.mandriva.com/security/advisories (vendor-advisory, Broken Link)
security.gentoo.org/glsa/201509-04 (vendor-advisory)
lists.fedoraproject.org/pipermail/package-announce/2015-April/155270.html (vendor-advisory, Third Party Advisory)
www.ubuntu.com/usn/USN-2559-1 (vendor-advisory, Third Party Advisory)
lists.fedoraproject.org/pipermail/package-announce/2015-April/155117.html (vendor-advisory, Third Party Advisory)
lists.fedoraproject.org/pipermail/package-announce/2015-April/155435.html (vendor-advisory, Third Party Advisory)
lists.fedoraproject.org/pipermail/package-announce/2015-April/155483.html (vendor-advisory, Third Party Advisory)
www.openwall.com/lists/oss-security/2015/03/31/2 (mailing-list, Mailing List, Third Party Advisory)
www.securitytracker.com/id/1032080 (VDB Entry, Third Party Advisory, vdb-entry)
www.securityfocus.com/bid/73436 (vdb-entry)

Frequently asked questions

What is CVE-2015-2806?: CVE-2015-2806 is a vulnerability in GNU Libtasn1, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2015-04-10.
Is CVE-2015-2806 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.