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CVE-2011-1779

24
FAUCET Score

CVE-2011-1779 describes multiple use-after-free vulnerabilities in libarchive versions 2.8.4 and 2.8.5, impacting products like FreeBSD that utilize this library. Attackers can exploit this by crafting malicious TAR archives or ISO9660 images, leading to a denial of service through application crashes and potentially other unspecified impacts. With a CVSS score of 7.5, this vulnerability is considered highly severe due to its network-based attack vector and low attack complexity, allowing unauthenticated attackers to achieve partial confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2.8.4CPE matchmatch criteria
cpe:2.3:a:freebsd:libarchive:2.8.4:*:*:*:*:*:*:*
2.8.5CPE matchmatch criteria
cpe:2.3:a:freebsd:libarchive:2.8.5:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.37%
Probability of exploitation in next 30 days
EPSS Percentile
69.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0137 is in the 50th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libarchive

Vendor Advisories (1)

redhatCVE-2011-1779Moderate

Libarchive multiple security issues

Dec 30, 2010

References

code.google.com / p/libarchive/source/detail
bugzilla.redhat.com / show_bug.cgi