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CVE-2011-1778

24
FAUCET Score

CVE-2011-1778 describes a buffer overflow vulnerability in libarchive versions through 2.8.5, affecting products like FreeBSD that utilize this library. This medium-complexity vulnerability can be exploited remotely via crafted TAR archives, potentially leading to a denial of service or arbitrary code execution. Despite its potential impact, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.8.5CPE matchmatch criteria
cpe:2.3:a:freebsd:libarchive:*:*:*:*:*:*:*:*
2.0CPE matchmatch criteria
cpe:2.3:a:freebsd:libarchive:2.0:*:*:*:*:*:*:*
2.1CPE matchmatch criteria
cpe:2.3:a:freebsd:libarchive:2.1:*:*:*:*:*:*:*
2.2CPE matchmatch criteria
cpe:2.3:a:freebsd:libarchive:2.2:*:*:*:*:*:*:*
2.2.3CPE matchmatch criteria
cpe:2.3:a:freebsd:libarchive:2.2.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
4.25%
Probability of exploitation in next 30 days
EPSS Percentile
90.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0425 is in the 87th percentile among its peer group of 19,955 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libarchive-0:2.8.3-3.el6_1
View patch

Vendor Advisories (1)

redhatCVE-2011-1778Moderate

Libarchive multiple security issues

Dec 30, 2010

References

code.google.com / p/libarchive/source/detail
lists.apple.com / archives/security-announce/2012/May/msg00001.html
bugzilla.redhat.com / show_bug.cgi
secunia.com / advisories/48034
rhn.redhat.com / errata/RHSA-2011-1507.html
support.apple.com / kb/HT5281
debian.org / security/2012/dsa-2413