CVE-2007-2958: Format string vulnerability in the inc_put_error function in src/inc.c in Sylpheed 2.4.4, and Sylpheed-Claws (

This month

MEDIUM 6.8WATCHLISTDOWNGRADEDOWNGRADE

CVE-2007-2958 is a medium-severity flaw (CVSS 6.8) affecting sylpheed, sylpheed-claws. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Format string vulnerability in the inc_put_error function in src/inc.c in Sylpheed 2.4.4, and Sylpheed-Claws (Claws Mail) 1.9.100 and 2.10.0, allows remote POP3 servers to execute arbitrary code via format string specifiers in crafted replies.

Why this priority

On your watchlist

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

Risk facts

CVSS score	6.8 (Medium)
EPSS exploit chance	3.2% (top 12%)
CISA exploited list	No
Published	2007-08-27
Last modified	2026-06-16

Publisher (CNA): Flexera Software LLC · Vendor: sylpheed · sylpheed-claws

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

Am I affected?

Timeline

2007-08-27 17:17 UTCPublished CVE record published
2026-06-16 22:40 UTCUpdated Record last modified

sylpheed sylpheed DOWNGRADE

Affected: 2.4.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.4.4

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.4.4 (Debian / Ubuntu)

apt-cache madison sylpheed sudo apt install sylpheed=<VERSION_BEFORE_2.4.4> sudo apt-mark hold sylpheed

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

dnf --showduplicates list sylpheed sudo dnf downgrade sylpheed-<VERSION_BEFORE_2.4.4> sudo dnf versionlock add sylpheed

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.

sylpheed-claws sylpheed-claws DOWNGRADE

Affected: 1.9.100 · 2.10.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.9.100

1. Check installed version

apt-cache policy sylpheed-claws || rpm -q sylpheed-claws || sylpheed-claws --version

2. No fixed release: DOWNGRADE to a release before 1.9.100 (Debian / Ubuntu)

apt-cache madison sylpheed-claws sudo apt install sylpheed-claws=<VERSION_BEFORE_1.9.100> sudo apt-mark hold sylpheed-claws

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

dnf --showduplicates list sylpheed-claws sudo dnf downgrade sylpheed-claws-<VERSION_BEFORE_1.9.100> sudo dnf versionlock add sylpheed-claws

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-2007-2958?

sylpheed: downgrade or apply the listed mitigation; sylpheed-claws: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2007-2958 being exploited?

CVE-2007-2958 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-2007-2958 affect?

CVE-2007-2958 affects sylpheed, sylpheed-claws. Severity is medium (CVSS 6.8). Format string vulnerability in the inc_put_error function in src/inc.c in Sylpheed 2.4.4, and Sylpheed-Claws (Claws Mail) 1.9.100 and 2.10.0, allows remote POP3 servers to execute arbitrary code via format string specifiers in crafted repli

How urgent is CVE-2007-2958?

Priority 51/100. On your watchlist

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References

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