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Fencer Vulns
high 7.5

CVE-2003-0842 json

Stack-based buffer overflow in mod_gzip_printf for mod_gzip 1.3.26.1a and earlier, and possibly later official versions, when running in de…

published 2003-10-09 23 y ago modified 2026-06-16 4 mo ago also EUVD-2003-0833

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.6%
EPSS 3.6% chance of exploitation in 30 days, percentile 89%
public exploits
1
Exploit-DB

Summary

Stack-based buffer overflow in mod_gzip_printf for mod_gzip 1.3.26.1a and earlier, and possibly later official versions, when running in debug mode, allows remote attackers to execute arbitrary code via a long filename in a GET request with an "Accept-Encoding: gzip" header.

Timeline

  1. Published
  2. First public exploit (EDB-126)

Exploit prediction

3.63% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-126 Apache mod_gzip (with debug_mode) 1.2.26.1a - Remote Overflow remote, 2003-11-20

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

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.