CVE-2001-1498: Buffer overflow in mod_bf 0.2 allows local users to execute arbitrary commands via a long script.

Routine

HIGH 7.2DOWNGRADE

CVE-2001-1498 is a high-severity flaw (CVSS 7.2) affecting mod bf. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in mod_bf 0.2 allows local users to execute arbitrary commands via a long script.

Why this priority

High severity

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

Risk facts

CVSS score	7.2 (High)
EPSS exploit chance	0.4% (top 64%)
CISA exploited list	No
Published	2001-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: markus kliegl

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

Am I affected?

Timeline

2001-12-31 05:00 UTCPublished CVE record published
2026-06-16 21:56 UTCUpdated Record last modified

markus kliegl mod bf DOWNGRADE

Affected: 0.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.2

1. Check installed version

apt-cache policy mod-bf || rpm -q mod-bf || mod-bf --version

2. No fixed release: DOWNGRADE to a release before 0.2 (Debian / Ubuntu)

apt-cache madison mod-bf sudo apt install mod-bf=<VERSION_BEFORE_0.2> sudo apt-mark hold mod-bf

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

dnf --showduplicates list mod-bf sudo dnf downgrade mod-bf-<VERSION_BEFORE_0.2> sudo dnf versionlock add mod-bf

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-2001-1498?

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

Is CVE-2001-1498 being exploited?

CVE-2001-1498 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-2001-1498 affect?

CVE-2001-1498 affects mod bf. Severity is high (CVSS 7.2). Buffer overflow in mod_bf 0.2 allows local users to execute arbitrary commands via a long script.

How urgent is CVE-2001-1498?

Priority 34/100. High severity

References

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