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CVE-2005-0337

20
FAUCET Score

CVE-2005-0337 describes a vulnerability in Postfix 2.1.3, affecting Red Hat, SUSE, and Wietse Venema products. When /proc/net/if_inet6 is unavailable and permit_mx_backup is enabled, remote attackers can bypass email restrictions and relay mail by targeting an IPv6 hostname. This vulnerability has a CVSS score of 7.5 (High), indicating a network-based attack with low complexity, potentially leading to partial confidentiality, integrity, and availability impacts. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2.1.3CPE matchmatch criteria
cpe:2.3:a:wietse_venema:postfix:2.1.3:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:4.0:*:advanced_server:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:4.0:*:enterprise_server:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:4.0:*:workstation:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:4.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.81%
Probability of exploitation in next 30 days
EPSS Percentile
85.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0281 is in the 73rd percentile among its peer group of 51,506 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: postfix-2:2.1.5-4.2.RHEL4
View patch

Vendor Advisories (1)

redhatCVE-2005-0337Low

security flaw

Jan 31, 2005

References

bugs.debian.org / cgi-bin/bugreport.cgi
Vendor Advisory
marc.info
secunia.com / advisories/14137
Patch
exchange.xforce.ibmcloud.com / vulnerabilities/19218
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11339
redhat.com / support/errata/RHSA-2005-152.html
securityfocus.com / bid/12445
Patch