CVE-1999-0920

Exp

Buffer overflow in the pop-2d POP daemon in the IMAP package allows remote attackers to gain privileges via the FOLD command.

Published: 1999-05-26 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-1999-0920 is rated High Exploit Risk (94.6/100): CVSS Critical severity, with high exploitation likelihood (EPSS 73.54%, 99th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +70.02% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-1999-0920

EDB-ID Source Kind Published Link
19226 exploit_db edb 1999-05-26 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-1999-0920

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-10-08 3.52% 73.54% +70.02%
2 2025-03-30 6.45% 3.52% -2.93%
3 2025-03-29 — 6.45% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-1999-0920

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-1999-0920

Affected software / configurations for CVE-1999-0920

Vendor Product Version Raw CPE
university_of_washington imap 4.4 cpe:2.3:a:university_of_washington:imap:4.4:*:*:*:*:*:*:*
university_of_washington pop2d — cpe:2.3:a:university_of_washington:pop2d:*:*:*:*:*:*:*:*

References for CVE-1999-0920

cvelogic Threat Intelligence