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CVE-2010-1194

18
FAUCET Score

CVE-2010-1194 describes a vulnerability in the match_component function of libESMTP 1.0.3.r1 (and potentially 1.0.4) that allows remote attackers to spoof trusted certificates. This flaw arises because the function incorrectly treats strings as equal if one is a substring of the other, enabling malicious subjectAltName manipulation. With a CVSS score of 6.8, this vulnerability has a medium attack complexity and could lead to partial confidentiality, integrity, and availability impacts. 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
0.1CPE matchmatch criteria
cpe:2.3:a:stafford.uklinux:libesmtp:0.1:-:*:*:*:*:*:*
0.1CPE matchmatch criteria
cpe:2.3:a:stafford.uklinux:libesmtp:0.1:a:*:*:*:*:*:*
0.2CPE matchmatch criteria
cpe:2.3:a:stafford.uklinux:libesmtp:0.2:*:*:*:*:*:*:*
0.3CPE matchmatch criteria
cpe:2.3:a:stafford.uklinux:libesmtp:0.3:*:*:*:*:*:*:*
0.4CPE matchmatch criteria
cpe:2.3:a:stafford.uklinux:libesmtp:0.4:*:*:*:*:*:*:*

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
1.18%
Probability of exploitation in next 30 days
EPSS Percentile
64.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0118 is in the 28th percentile among its peer group of 19,955 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Vendor Patches (1)

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

Vendor Advisories (1)

redhatCVE-2010-1194Moderate

libESMTP: Multiple certificate validation flaws

Mar 3, 2010

References

bugs.debian.org / cgi-bin/bugreport.cgi
Patch
lists.opensuse.org / opensuse-security-announce/2010-05/msg00001.html
openwall.com / lists/oss-security/2010/03/03/6
openwall.com / lists/oss-security/2010/03/09/3
vupen.com / english/advisories/2010/1107