CVE-2005-2663: masqmail before 0.2.18 allows local users to overwrite arbitrary files via a symlink attack on a log file.

Routine

LOW 2.1WATCHLISTDOWNGRADE

CVE-2005-2663 is a low-severity flaw (CVSS 2.1) affecting masqmail. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

masqmail before 0.2.18 allows local users to overwrite arbitrary files via a symlink attack on a log file.

Why this priority

On your watchlist

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

Risk facts

CVSS score	2.1 (Low)
EPSS exploit chance	0.4% (top 70%)
CISA exploited list	No
Published	2005-09-21
Last modified	2026-06-16

Publisher (CNA): Debian GNU/Linux · Vendor: masqmail

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

Am I affected?

Timeline

2005-09-21 19:03 UTCPublished CVE record published
2026-06-16 22:15 UTCUpdated Record last modified

masqmail masqmail DOWNGRADE

Affected: 0.0.0 · 0.0.1 · 0.0.2 · 0.0.3 · 0.0.4 · 0.0.6 · 0.0.7 · 0.0.8

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.0.0

1. Check installed version

apt-cache policy masqmail || rpm -q masqmail || masqmail --version

2. No fixed release: DOWNGRADE to a release before 0.0.0 (Debian / Ubuntu)

apt-cache madison masqmail sudo apt install masqmail=<VERSION_BEFORE_0.0.0> sudo apt-mark hold masqmail

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list masqmail sudo dnf downgrade masqmail-<VERSION_BEFORE_0.0.0> sudo dnf versionlock add masqmail

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2005-2663?

masqmail: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2005-2663 being exploited?

CVE-2005-2663 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-2005-2663 affect?

CVE-2005-2663 affects masqmail. Severity is low (CVSS 2.1). masqmail before 0.2.18 allows local users to overwrite arbitrary files via a symlink attack on a log file.

How urgent is CVE-2005-2663?

Priority 20/100. On your watchlist

Related CVEs

CVE-2011-3350 CRITICAL 9.8 UPGRADE masqmail 0.2.21 through 0.2.30 improperly calls seteuid() in src/log.c and src/masqmail.c that results in impr
CVE-2005-2662 HIGH 7.5 DOWNGRADE masqmail before 0.2.18 allows remote attackers to execute arbitrary commands via crafted e-mail addresses that
CVE-2002-1279 HIGH 7.2 DOWNGRADE Multiple buffer overflows in conf.c for Masqmail 0.1.x before 0.1.17, and 0.2.x before 0.2.15, allow local use
CVE-2001-1173 HIGH 7.2 DOWNGRADE Vulnerability in MasqMail before 0.1.15 allows local users to gain privileges via piped aliases.

References

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