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CVE-2012-5821

Published: Nov 4, 2012Updated: Apr 29, 2026 Sources: CVE List NVDCWE-295
NVD MITRE
5.9CVSSMEDIUM
EPSS Score
0.8%
Top 47.9%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
No Fix Available

Description

Lynx does not verify that the server's certificate is signed by a trusted certification authority, which allows man-in-the-middle attackers to spoof SSL servers via a crafted certificate, related to improper use of a certain GnuTLS function.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:NI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-295

Affected Products

n/an/a
lynxlynx
Mixed
Consumer Software / browser
ubuntu linuxcanonical
On-premOS
Operating Systems / linux-distro
lynxoss-projectConsumer Softwareaka lynx
canonicalcommercialGBOperating Systemsaka canonical ltd.

Attack Graph

Products CVE Techniques Tactics

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Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

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MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://wiki.mageia.org/en/Support/Advisories/MGASA-2012-0351
wiki.mageia.org
http://www.ubuntu.com/usn/USN-1642-1
ubuntu.com
https://exchange.xforce.ibmcloud.com/vulnerabilities/79930
exchange.xforce.ibmcloud.com
and 2 more references View all →

Timeline

Published
Nov 4, 2012
Last Updated
Apr 29, 2026

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