CVE-2002-1957: Buffer overflow in the netlog function in pen.c for Pen 0.9.1 and 0.9.2 allows remote attackers to execute arb

This month

HIGH 7.5DOWNGRADE

CVE-2002-1957 is a high-severity flaw (CVSS 7.5) affecting pen. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in the netlog function in pen.c for Pen 0.9.1 and 0.9.2 allows remote attackers to execute arbitrary commands via malformed log messages.

Why this priority

High severity

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	2.3% (top 17%)
CISA exploited list	No
Published	2002-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: pen

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

Am I affected?

Timeline

2002-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:00 UTCUpdated Record last modified

pen pen DOWNGRADE

Affected: 0.9.1 · 0.9.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.9.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.9.1 (Debian / Ubuntu)

apt-cache madison pen sudo apt install pen=<VERSION_BEFORE_0.9.1> sudo apt-mark hold pen

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

dnf --showduplicates list pen sudo dnf downgrade pen-<VERSION_BEFORE_0.9.1> sudo dnf versionlock add pen

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-2002-1957?

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

Is CVE-2002-1957 being exploited?

CVE-2002-1957 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-2002-1957 affect?

CVE-2002-1957 affects pen. Severity is high (CVSS 7.5). Buffer overflow in the netlog function in pen.c for Pen 0.9.1 and 0.9.2 allows remote attackers to execute arbitrary commands via malformed log messages.

How urgent is CVE-2002-1957?

Priority 47/100. High severity

Related CVEs

CVE-2014-2387 MEDIUM 4.4 DOWNGRADE MITIGATE Pen 0.18.0 has Insecure Temporary File Creation vulnerabilities

References

← Back to latest CVEs