CVE-2004-2771

Linux vulnerability

CVSS

7.5

EPSS

6.9%

EPSS pct

93th

Exploited

No known

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.

Affected vendor

Oracle

Affected product

Linux

CVSS vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Weakness type (CWE)

CWE-20 — Improper Input Validation

Published

2014-12-24

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to partial impact to confidentiality, partial impact to integrity, partial impact to availability.

Its EPSS score of 6.9% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 93% of all scored CVEs.

Check your external exposure to CVE-2004-2771

Confirm whether Oracle Linux is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2004-2771.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2004-2771

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