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Fencer Vulns
medium 6.8

CVE-2009-3490 json

GNU Wget before 1.12 does not properly handle a '\0' character in a domain name in the Common Name field of an X.509 certificate, which all…

published 2009-09-30 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-3472

cvss
6.8
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.5%
EPSS 3.5% chance of exploitation in 30 days, percentile 89%
public exploits
0
none known

Summary

GNU Wget before 1.12 does not properly handle a '\0' character in a domain name in the Common Name field of an X.509 certificate, which allows man-in-the-middle remote attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

Patch / fix

  • wget Debian 14, Debian 13, Debian 12 1.12-1

debian advisories DEBIAN-CVE-2009-3490

  • wget RHEL 3 1.10.2-0.30E.1
  • wget RHEL 4 1.10.2-1.el4_8.1
  • wget RHEL 5 1.11.4-2.el5_4.1

red hat advisories RHSA-2009:1549

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-2009-3490 updated cvss 4.0

wget: incorrect verification of SSL certificate with NUL in name

  • Red Hat Desktop version 3 wget 1.10.2-0.30E.1 Red Hat Enterprise Linux (v. 5 server) wget 1.11.4-2.el5_4.1 Red Hat Enterprise Linux AS version 3 wget 1.10.2-0.30E.1 Red Hat Enterprise Linux AS version 4 wget 1.10.2-1.el4_8.1 Red Hat Enterprise Linux Desktop (v. 5 client) wget 1.11.4-2.el5_4.1 Red Hat Enterprise Linux Desktop version 4 wget 1.10.2-1.el4_8.1
    +4 more products
    Red Hat Enterprise Linux ES version 3 wget 1.10.2-0.30E.1 Red Hat Enterprise Linux ES version 4 wget 1.10.2-1.el4_8.1 Red Hat Enterprise Linux WS version 3 wget 1.10.2-0.30E.1 Red Hat Enterprise Linux WS version 4 wget 1.10.2-1.el4_8.1
    fixed: vendor fix RHSA-2009:1549

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

3.52% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness

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.