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CVE-2004-2771

HIGH · CVSS 7.5EPSS 6.9%EU EUVD

The expand function in fio.c in Heirloom mailx 12.5 and earlier and BSD mailx 8.1.2 and earlier allows remote attackers to execute arbitrary commands via shell metacharacters in an email address.

Key facts

CVSS score
7.5 (v2.0)
Severity
HIGH
CVSS vector
AV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness (CWE)
CWE-20
EPSS score
6.9% (94th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2004-2761)
Published
December 24, 2014
NVD last modified
September 23, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2004-2761 in the EU Vulnerability Database. Last updated in EUVD on August 8, 2024.

View on the EU Vulnerability Database

Affected products

  • bsd mailx project / bsd mailx
  • heirloom / mailx
  • oracle / linux
  • oracle / linux
  • redhat / enterprise linux
  • redhat / enterprise linux

Certified products that may be affected

25 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.

See all 25 in the Security Certifications Explorer.

References

Last updated September 25, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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