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CVE-1999-0042

44
FAUCET Score

CVE-1999-0042 describes a critical buffer overflow vulnerability within the University of Washington's IMAP and POP server implementations, affecting various Linux distributions including Red Hat and Caldera. With a CVSS score of 10.0, this flaw allows unauthenticated remote attackers to execute arbitrary code with complete confidentiality, integrity, and availability impact due to its low attack complexity. While not listed on the CISA KEV catalog or currently active on the Hot List, public exploit code exists, indicating its historical exploitability. Despite its age and high severity, there is no recorded community discussion or media coverage for this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
4CPE matchmatch criteria
cpe:2.3:a:university_of_washington:imap:4:*:*:*:*:*:*:*
3CPE matchmatch criteria
cpe:2.3:a:university_of_washington:pop:3:*:*:*:*:*:*:*
2.1CPE matchmatch criteria
cpe:2.3:o:bsdi:bsd_os:2.1:*:*:*:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:o:bsdi:bsd_os:3.0:*:*:*:*:*:*:*
1.0CPE matchmatch criteria
cpe:2.3:o:caldera:openlinux:1.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

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

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

Exploit Intelligence

EPSS Score
12.83%
Probability of exploitation in next 30 days
EPSS Percentile
95.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
ExploitDB: EDB-340 · Jun 24, 1997
This CVE's current EPSS score of 0.1283 is in the 94th percentile among its peer group of 51,485 CVEs.

Social Chatter

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

Remediation records are not available for this CVE.

References

exchange.xforce.ibmcloud.com / vulnerabilities/CVE-1999-0042