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CVE-2010-1637

23
FAUCET Score

CVE-2010-1637 describes a vulnerability in the Mail Fetch plugin of SquirrelMail 1.4.20 and earlier, allowing authenticated users to bypass firewall restrictions. By manipulating the POP3 port number, attackers can leverage SquirrelMail as a proxy to scan internal networks. This medium-severity vulnerability has a CVSS score of 6.5, indicating a network attack vector with low complexity and potential for high confidentiality impact. Despite its age, there is no evidence of active exploitation, public exploit code, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.4.20CPE matchmatch criteria
cpe:2.3:a:squirrelmail:squirrelmail:*:*:*:*:*:*:*:*
11CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:11:*:*:*:*:*:*:*
12CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:12:*:*:*:*:*:*:*
13CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:13:*:*:*:*:*:*:*
< 10.6.8CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.68%
Probability of exploitation in next 30 days
EPSS Percentile
84.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0268 is in the 94th percentile among its peer group of 21,977 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 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 (2)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: squirrelmail-0:1.4.8-18.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: squirrelmail-0:1.4.8-5.el5_7.13
View patch

Vendor Advisories (1)

redhatCVE-2010-1637Low

SquirrelMail: Mail Fetch plugin -- port-scans via non-standard POP3 server ports

May 20, 2010

References

conference.hitb.org / hitbsecconf2010dxb/materials/D1%20-%20Laurent%20Oudot%20-%20Improving%20the%20Stealthiness%20of%20Web%20Hacking.pdf
Broken Link
lists.apple.com / archives/security-announce/2012/Feb/msg00000.html
Mailing List
lists.fedoraproject.org / pipermail/package-announce/2010-June/043239.html
Mailing List
lists.fedoraproject.org / pipermail/package-announce/2010-June/043258.html
Mailing List
lists.fedoraproject.org / pipermail/package-announce/2010-June/043261.html
Mailing List
rhn.redhat.com / errata/RHSA-2012-0103.html
Third Party Advisory
secunia.com / advisories/40307
Broken Link
squirrelmail.org / security/issue/2010-06-21
PatchVendor Advisory
squirrelmail.svn.sourceforge.net / viewvc/squirrelmail/branches/SM-1_4-STABLE/squirrelmail/plugins/mail_fetch/functions.php
Product
squirrelmail.svn.sourceforge.net / viewvc/squirrelmail/branches/SM-1_4-STABLE/squirrelmail/plugins/mail_fetch/options.php
Patch
support.apple.com / kb/HT5130
Third Party Advisory
mandriva.com / security/advisories
Broken Link
openwall.com / lists/oss-security/2010/05/25/3
Mailing List
openwall.com / lists/oss-security/2010/05/25/9
Mailing List
openwall.com / lists/oss-security/2010/06/21/1
Mailing ListPatch
securityfocus.com / bid/40291
Broken LinkThird Party AdvisoryVDB Entry
securityfocus.com / bid/40307
Broken LinkThird Party AdvisoryVDB Entry
vupen.com / english/advisories/2010/1535
Broken Link
vupen.com / english/advisories/2010/1536
Broken Link
vupen.com / english/advisories/2010/1554
Broken Link