CVE-2004-1257: Buffer overflow in the process_abc function in abc.c for abc2mtex 1.6.1 allows remote attackers to execute arb

This week

HIGH 10.0DOWNGRADE

CVE-2004-1257 is a high-severity flaw (CVSS 10.0) affecting abc2mtex. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in the process_abc function in abc.c for abc2mtex 1.6.1 allows remote attackers to execute arbitrary code via crafted ABC files.

Why this priority

Critical severity
EPSS top 7%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	10.0 (High)
EPSS exploit chance	6.0% (top 7%)
CISA exploited list	No
Published	2005-01-10
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: abc2mtex

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

Am I affected?

Timeline

2005-01-10 05:00 UTCPublished CVE record published
2026-06-16 22:07 UTCUpdated Record last modified

abc2mtex abc2mtex DOWNGRADE

Affected: 1.6.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.6.1

1. Check installed version

apt-cache policy abc2mtex || rpm -q abc2mtex || abc2mtex --version

2. No fixed release: DOWNGRADE to a release before 1.6.1 (Debian / Ubuntu)

apt-cache madison abc2mtex sudo apt install abc2mtex=<VERSION_BEFORE_1.6.1> sudo apt-mark hold abc2mtex

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

dnf --showduplicates list abc2mtex sudo dnf downgrade abc2mtex-<VERSION_BEFORE_1.6.1> sudo dnf versionlock add abc2mtex

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-2004-1257?

abc2mtex: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2004-1257 being exploited?

CVE-2004-1257 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-2004-1257 affect?

CVE-2004-1257 affects abc2mtex. Severity is high (CVSS 10.0). Buffer overflow in the process_abc function in abc.c for abc2mtex 1.6.1 allows remote attackers to execute arbitrary code via crafted ABC files.

How urgent is CVE-2004-1257?

Priority 63/100. Critical severity; EPSS top 7%: very likely to be exploited; Public exploit reference

References

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