How severe is CVE-1999-0920?

CVE-1999-0920 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-1999-0920 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 32% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-0920?

CVE-1999-0920 primarily affects University Of Washington Imap. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-1999-0920?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-1999-0920 published?

CVE-1999-0920 was published on 1999-05-26 and last updated on 2026-06-16.

CVE-1999-0920

CVE-1999-0920 is a critical-severity vulnerability in University Of Washington Imap with a CVSS 2.0 base score of 10.0. Its EPSS exploit-prediction score of 32% places it in the 98th percentile, indicating an elevated likelihood of exploitation.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 32% (98th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: University Of Washington Imap
Published: 1999-05-26
Last modified: 2026-06-16

Description

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

Frequently asked questions

What is CVE-1999-0920?: Buffer overflow in the pop-2d POP daemon in the IMAP package allows remote attackers to gain privileges via the FOLD command.
How severe is CVE-1999-0920?: CVE-1999-0920 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-1999-0920 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 32% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0920?: CVE-1999-0920 primarily affects University Of Washington Imap. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-1999-0920?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-1999-0920 published?: CVE-1999-0920 was published on 1999-05-26 and last updated on 2026-06-16.

References

http://www.securityfocus.com/bid/283

Affected products (2)

cpe:2.3:a:university_of_washington:imap:4.4:*:*:*:*:*:*:*
cpe:2.3:a:university_of_washington:pop2d:*:*:*:*:*:*:*:*

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CVE-2000-1197 — Low (CVSS 2.1): POP2 or POP3 server (pop3d) in imap-uw IMAP package on FreeBSD and other operating systems creates lock files with…

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