CVE-2011-1778

Buffer overflow in libarchive through 2.8.5 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted TAR archive.

Published: 2012-04-13 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-1778 is rated Moderate Risk (58/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 3.02%). 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-2011-1778

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 2025-12-14 2.37% 3.02% +0.66%
2 2025-08-14 2.32% 2.37% +0.05%
3 2025-04-03 — 2.32% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-1778

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.8 2.0 MEDIUM
AV:N/AC:M/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:M)
Exploitation needs some favorable conditions, but not exceptional ones.
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.
 8.6 6.4 [email protected]

Weakness enumeration for CVE-2011-1778

OS Trackers for CVE-2011-1778

vendor priority summary link
debian not yet assigned CVE-2011-1778 not yet assigned priority: Debian including 1 source packages (libarchive), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2011-1778
gentoo normal CVE-2011-1778: 1 GLSA(s) (201406-02), 1 atom(s) (app-arch/libarchive); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2011-1778
redhat medium — https://access.redhat.com/security/cve/CVE-2011-1778
ubuntu medium CVE-2011-1778 medium priority: Ubuntu including 1 source packages (libarchive), 6 status rows across 6 suites (hardy, lucid, maverick, natty, oneiric, upstream): released 4, ignored 1, needs-triage 1. https://ubuntu.com/security/CVE-2011-1778

Affected software / configurations for CVE-2011-1778

Vendor Product Version Raw CPE
freebsd libarchive <= 2.8.5 cpe:2.3:a:freebsd:libarchive:*:*:*:*:*:*:*:*
freebsd libarchive 2.0 cpe:2.3:a:freebsd:libarchive:2.0:*:*:*:*:*:*:*
freebsd libarchive 2.1 cpe:2.3:a:freebsd:libarchive:2.1:*:*:*:*:*:*:*
freebsd libarchive 2.2 cpe:2.3:a:freebsd:libarchive:2.2:*:*:*:*:*:*:*
freebsd libarchive 2.2.3 cpe:2.3:a:freebsd:libarchive:2.2.3:*:*:*:*:*:*:*
freebsd libarchive 2.3 cpe:2.3:a:freebsd:libarchive:2.3:*:*:*:*:*:*:*
freebsd libarchive 2.4 cpe:2.3:a:freebsd:libarchive:2.4:*:*:*:*:*:*:*
freebsd libarchive 2.5 cpe:2.3:a:freebsd:libarchive:2.5:*:*:*:*:*:*:*
freebsd libarchive 2.6 cpe:2.3:a:freebsd:libarchive:2.6:*:*:*:*:*:*:*
freebsd libarchive 2.6.1 cpe:2.3:a:freebsd:libarchive:2.6.1:*:*:*:*:*:*:*
freebsd libarchive 2.6.2 cpe:2.3:a:freebsd:libarchive:2.6.2:*:*:*:*:*:*:*
freebsd libarchive 2.7.0 cpe:2.3:a:freebsd:libarchive:2.7.0:*:*:*:*:*:*:*
freebsd libarchive 2.7.1 cpe:2.3:a:freebsd:libarchive:2.7.1:*:*:*:*:*:*:*
freebsd libarchive 2.8.0 cpe:2.3:a:freebsd:libarchive:2.8.0:*:*:*:*:*:*:*
freebsd libarchive 2.8.1 cpe:2.3:a:freebsd:libarchive:2.8.1:*:*:*:*:*:*:*
freebsd libarchive 2.8.2 cpe:2.3:a:freebsd:libarchive:2.8.2:*:*:*:*:*:*:*
freebsd libarchive 2.8.3 cpe:2.3:a:freebsd:libarchive:2.8.3:*:*:*:*:*:*:*
freebsd libarchive 2.8.4 cpe:2.3:a:freebsd:libarchive:2.8.4:*:*:*:*:*:*:*

References for CVE-2011-1778

cvelogic Threat Intelligence