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Fencer Vulns
high 7.6

CVE-2003-1557 json

Off-by-one buffer overflow in spamc of SpamAssassin 2.40 through 2.43, when using BSMTP mode ("-B"), allows remote attackers to execute arb…

published 2003-12-31 22 y ago modified 2026-06-16 4 mo ago also EUVD-2003-1547

cvss
7.6
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.6%
EPSS 4.6% chance of exploitation in 30 days, percentile 91%
public exploits
0
none known

Summary

Off-by-one buffer overflow in spamc of SpamAssassin 2.40 through 2.43, when using BSMTP mode ("-B"), allows remote attackers to execute arbitrary code via email containing headers with leading "." characters.

Patch / fix

  • spamassassin Debian 14, Debian 13, Debian 12 3.1.7-2

debian advisories DEBIAN-CVE-2003-1557

Exploit prediction

4.56% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 7.6 AV:N/AC:H/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Vulns 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.