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Fencer Vulns
medium 5.0

CVE-2005-2265 json

Firefox before 1.0.5, Mozilla before 1.7.9, and Netscape 8.0.2 and 7.2 allows remote attackers to cause a denial of service (access violati…

published 2005-07-13 21 y ago modified 2026-06-16 4 mo ago also EUVD-2005-2266

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
68.1%
EPSS 68.1% chance of exploitation in 30 days, percentile 99.3%
public exploits
3
Metasploit, Exploit-DB

Summary

Firefox before 1.0.5, Mozilla before 1.7.9, and Netscape 8.0.2 and 7.2 allows remote attackers to cause a denial of service (access violation and crash), and possibly execute arbitrary code, by calling InstallVersion.compareTo with an object instead of a string.

Patch / fix

  • thunderbird RHEL 4 1.0.6-1.4.1
  • devhelp RHEL 4 0.9.2-2.4.6
  • firefox RHEL 4 1.0.6-1.4.1

red hat advisories RHSA-2005:601RHSA-2005:587RHSA-2005:586

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-2005-2265 updated

security flaw

  • Red Hat Enterprise Linux AS version 4 devhelp 0.9.2-2.4.6, firefox 1.0.6-1.4.1, thunderbird 1.0.6-1.4.1 Red Hat Enterprise Linux Desktop version 4 devhelp 0.9.2-2.4.6, firefox 1.0.6-1.4.1, thunderbird 1.0.6-1.4.1 Red Hat Enterprise Linux ES version 4 devhelp 0.9.2-2.4.6, firefox 1.0.6-1.4.1, thunderbird 1.0.6-1.4.1 Red Hat Enterprise Linux WS version 4 devhelp 0.9.2-2.4.6, firefox 1.0.6-1.4.1, thunderbird 1.0.6-1.4.1
    fixed: vendor fix RHSA-2005:587

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

Timeline

  1. First public exploit (Metasploit exploit/multi/browser/mozilla_compareto)
  2. Published

Exploit prediction

68.10% chance of exploitation in the next 30 days, higher than 99.3% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Metasploit exploit/multi/browser/mozilla_compareto Mozilla Suite/Firefox compareTo() Code Execution metasploit exploit, normal rank, 2005-07-13
  • EDB-16306 Mozilla Suite/Firefox - InstallVersion->compareTo() Code Execution (Metasploit) remote, 2010-09-20
  • EDB-9947 Mozilla Suite/Firefox < 1.0.5 - compareTo Code Execution (Metasploit) remote, 2005-07-13
  • bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=295854 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/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.