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CVE-2004-2657

11
FAUCET Score

CVE-2004-2657 describes a privacy concern in Mozilla Firefox 1.5.0.1, and potentially other versions, where user activity records, specifically "Passwords Never Saved" website lists, persist even after uninstallation. This allows local users sharing a Windows profile to access these records upon a new Firefox installation. The vulnerability has a low severity CVSS score of 1.7, indicating a local attack vector with low complexity and a potential impact of partial confidentiality. Despite the vendor disputing it as intended behavior, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion beyond a single GitHub mention.

Impacted Technologies

VendorProductVersion(s)CPE
1.5.0.1CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:1.5.0.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

1.7LOW

AV:L/AC:L/Au:S/C:P/I:N/A:N

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
SINGLE
Exploitability Score
3.1
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.27%
Probability of exploitation in next 30 days
EPSS Percentile
18.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0027 is in the 64th percentile among its peer group of 1,511 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

bugzilla.mozilla.org / show_bug.cgi
bugzilla.mozilla.org / show_bug.cgi
securityfocus.com / archive/1/431021/100/0/threaded
securityfocus.com / archive/1/431063/100/0/threaded