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CVE-2001-1154

19
FAUCET Score

CVE-2001-1154 describes a denial-of-service vulnerability affecting Cyrus IMAP Server versions 2.0.15, 2.0.16, and 1.6.24 running on BSDi 4.2. Remote attackers can exploit this flaw by using PHP IMAP clients, causing the server to hang. With a CVSS score of 5.0 (Medium), this vulnerability is easily exploitable over the network with low attack complexity, leading to a partial availability impact. There is no evidence of active exploitation, nor are there known public exploits or Metasploit modules, though it has garnered a notable amount of community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
1.6.24CPE matchmatch criteria
cpe:2.3:a:carnegie_mellon_university:cyrus_imap_server:1.6.24:*:*:*:*:*:*:*
2.0.15CPE matchmatch criteria
cpe:2.3:a:carnegie_mellon_university:cyrus_imap_server:2.0.15:*:*:*:*:*:*:*
2.0.16CPE matchmatch criteria
cpe:2.3:a:carnegie_mellon_university:cyrus_imap_server:2.0.16:*:*:*:*:*:*:*
4.2CPE matchmatch criteria
cpe:2.3:o:bsdi:bsd_os:4.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.61%
Probability of exploitation in next 30 days
EPSS Percentile
73.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0161 is in the 58th percentile among its peer group of 23,723 CVEs.

Social Chatter

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

Remediation records are not available for this CVE.

References

exchange.xforce.ibmcloud.com / vulnerabilities/7053
securityfocus.com / archive/1/211056
Vendor Advisory
securityfocus.com / bid/3260
Vendor Advisory