CVE-2005-0147

Firefox before 1.0 and Mozilla before 1.7.5, when configured to use a proxy, respond to 407 proxy...

7.5 High

Firefox before 1.0 and Mozilla before 1.7.5, when configured to use a proxy, respond to 407 proxy auth requests from arbitrary servers, which allows remote attackers to steal NTLM or SPNEGO credentials.

Exploit likelihood

1.41%Up 0.1 points since Feb 4, 2022

What each source reports

NVD Score used 7.5

Record: CVE-2005-0147
CVSS 2.0: 7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Updated: 2026-11-02

CVE List No score

Record: CVE-2005-0147
Updated: 2026-11-02

EUVDEUVD-2005-0148 No score

Record: EUVD-2005-0148
Updated: 2026-11-03

GitHub AdvisoriesGHSA-25p3-2r5q-956q No score

Firefox before 1.0 and Mozilla before 1.7.5, when configured to use a proxy, respond to 407 proxy...

Record: GHSA-25p3-2r5q-956q
Updated: 2026-11-02

Affected products

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2005-0147 is a high vulnerability (CVSS 7.5) in Mozilla Firefox, published January 29, 2005. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.41%, the 72nd percentile. No source names a fixed version.

Exploit likelihood

What each source reports

Affected products

History

In short

References