CVE-2002-0239: Buffer overflow in hanterm 3.3.1 and earlier allows local users to execute arbitrary code via a long string in

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HIGH 7.2DOWNGRADE

CVE-2002-0239 is a high-severity flaw (CVSS 7.2) affecting hanterm. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in hanterm 3.3.1 and earlier allows local users to execute arbitrary code via a long string in the (1) -fn, (2) -hfb, or (3) -hfn argument.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.2 (High)
EPSS exploit chance	1.1% (top 34%)
CISA exploited list	No
Published	2002-05-29
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: hanterm

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

Am I affected?

Timeline

2002-05-29 04:00 UTCPublished CVE record published
2026-06-16 21:57 UTCUpdated Record last modified

hanterm hanterm DOWNGRADE

Affected: 3.3 · 3.3.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.3

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.3 (Debian / Ubuntu)

apt-cache madison hanterm sudo apt install hanterm=<VERSION_BEFORE_3.3> sudo apt-mark hold hanterm

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

dnf --showduplicates list hanterm sudo dnf downgrade hanterm-<VERSION_BEFORE_3.3> sudo dnf versionlock add hanterm

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Hanterm 3.3 - Local Buffer Overflow (1)
Exploit-DB: Hanterm 3.3 - Local Buffer Overflow (2)

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-2002-0239?

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

Is CVE-2002-0239 being exploited?

CVE-2002-0239 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-2002-0239 affect?

CVE-2002-0239 affects hanterm. Severity is high (CVSS 7.2). Buffer overflow in hanterm 3.3.1 and earlier allows local users to execute arbitrary code via a long string in the (1) -fn, (2) -hfb, or (3) -hfn argument.

How urgent is CVE-2002-0239?

Priority 47/100. High severity; Public exploit reference

References

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