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Fencer Intel
medium 5.8

CVE-2012-3482 json

Fetchmail 5.0.8 through 6.3.21, when using NTLM authentication in debug mode, allows remote NTLM servers to (1) cause a denial of service (…

published 2012-12-21 13 y ago modified 2026-06-16 4 mo ago also EUVD-2012-3438

cvss
5.8
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.9%
EPSS 1.9% chance of exploitation in 30 days, percentile 79%
public exploits
0
none known

Summary

Fetchmail 5.0.8 through 6.3.21, when using NTLM authentication in debug mode, allows remote NTLM servers to (1) cause a denial of service (crash and delayed delivery of inbound mail) via a crafted NTLM response that triggers an out-of-bounds read in the base64 decoder, or (2) obtain sensitive information from memory via an NTLM Type 2 message with a crafted Target Name structure, which triggers an out-of-bounds read.

Patch / fix

  • fetchmail Debian 14, Debian 13, Debian 12 6.3.22-1

debian advisories DEBIAN-CVE-2012-3482

  • fetchmail SLES for SAP 11 SP4, SLES 11 SP4, SLED 11 SP4 6.3.8.90-13.20.21.1

suse advisories SUSE-SU-2016:0872-1

  • fetchmail openSUSE Tumbleweed 6.3.26-13.4

opensuse advisories openSUSE-SU-2024:10194-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2012-3482 updated cvss 5.0

fetchmail: DoS (crash) in the base64 decoder upon server NTLM protocol exchange abort right after the initial request

  • Red Hat Enterprise Linux 5 fetchmail Red Hat Enterprise Linux 6 fetchmail
    affected: no fix planned “Will not fix”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.87% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 5.8 AV:N/AC:M/Au:N/C:P/I:N/A:P

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.