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CVE-2005-2661

33
FAUCET Score

CVE-2005-2661 describes a format string vulnerability in the ParseBannerAndCapability function of up-imapproxy versions 1.2.3 and 1.2.4. This flaw allows a malicious remote IMAP server to execute arbitrary code on the proxy by embedding format string specifiers within its banner or capability line. With a CVSS score of 7.5, this vulnerability is considered highly severe, requiring no authentication and having low attack complexity, potentially leading to full compromise of confidentiality, integrity, and availability. While not listed on the KEV catalog or having active Metasploit/Nuclei modules, an ExploitDB entry (EDB-26340) confirms the existence of exploit code, though there is minimal community discussion or media coverage surrounding this older vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
1.2.3CPE matchmatch criteria
cpe:2.3:a:up-imapproxy:up-imapproxy:1.2.3:*:*:*:*:*:*:*
1.2.4CPE matchmatch criteria
cpe:2.3:a:up-imapproxy:up-imapproxy:1.2.4:*:*:*:*:*:*:*

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
12.11%
Probability of exploitation in next 30 days
EPSS Percentile
95.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-26340 · Oct 10, 2005
This CVE's current EPSS score of 0.1211 is in the 94th percentile among its peer group of 51,485 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, 0.1 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

Patch Available

Vendor Patches (1)

debianpatch availablevia nvd_reference
View patch

References

secunia.com / advisories/17100
Vendor Advisory
secunia.com / advisories/17120
secunia.com / advisories/19113
securityreason.com / securityalert/547
debian.org / security/2005/dsa-852
PatchVendor Advisory
gentoo.org / security/en/glsa/glsa-200603-04.xml
securityfocus.com / bid/15048
vupen.com / english/advisories/2005/2014
vupen.com / english/advisories/2005/2015