CVE-1999-0880: Denial of service in WU-FTPD via the SITE NEWER command, which does not free memory properly.

This month

MEDIUM 5.0WATCHLISTMITIGATEMITIGATE

CVE-1999-0880 is a medium-severity flaw (CVSS 5.0) affecting bsd os, openlinux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Denial of service in WU-FTPD via the SITE NEWER command, which does not free memory properly.

Why this priority

On your watchlist

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	1.4% (top 28%)
CISA exploited list	No
Published	1999-10-01
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: bsdi · caldera

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

1999-10-01 04:00 UTCPublished CVE record published
2026-06-16 21:49 UTCUpdated Record last modified

bsdi bsd os MITIGATE

Affected: 2.1 · 3.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.1

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

caldera openlinux MITIGATE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-1999-0880?

bsd os: mitigate or apply the listed mitigation; openlinux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-1999-0880 being exploited?

CVE-1999-0880 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-1999-0880 affect?

CVE-1999-0880 affects bsd os, openlinux. Severity is medium (CVSS 5.0). Denial of service in WU-FTPD via the SITE NEWER command, which does not free memory properly.

How urgent is CVE-1999-0880?

Priority 41/100. On your watchlist

Related CVEs

CVE-2008-4609 HIGH 7.1 MITIGATE MITIGATE The TCP implementation in (1) Linux, (2) platforms based on BSD Unix, (3) Microsoft Windows, (4) Cisco product
CVE-2001-1541 HIGH 7.2 MITIGATE Buffer overflow in Unix-to-Unix Copy Protocol (UUCP) in BSDI BSD/OS 3.0 through 4.2 allows local users to exec
CVE-2001-1154 MEDIUM 5.0 DOWNGRADE MITIGATE Cyrus 2.0.15, 2.0.16, and 1.6.24 on BSDi 4.2, with IMAP enabled, allows remote attackers to cause a denial of
CVE-2001-1133 LOW 2.1 MITIGATE Vulnerability in a system call in BSDI 3.0 and 3.1 allows local users to cause a denial of service (reboot) in
CVE-2000-1103 HIGH 7.2 MITIGATE rcvtty in BSD 3.0 and 4.0 does not properly drop privileges before executing a script, which allows local atta

References

← Back to latest CVEs