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CVE-2005-0527

17
FAUCET Score

CVE-2005-0527 describes a vulnerability in Firefox 1.0 where remote attackers could execute arbitrary code. This was achieved by exploiting plugins that loaded "privileged content" into frames, specifically through XUL events triggered by a user dragging a scrollbar twice, a technique dubbed "Firescrolling." The vulnerability has a CVSS score of 5.1, indicating a medium severity with network access, high attack complexity, and partial impact on confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:1.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.1MEDIUM

AV:N/AC:H/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Exploitability Score
4.9
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
7.32%
Probability of exploitation in next 30 days
EPSS Percentile
93.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0732 is in the 93rd percentile among its peer group of 19,958 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 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

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: firefox-0:1.0.1-1.4.3
View patch

Vendor Advisories (1)

redhatCVE-2005-0527Important

security flaw

Feb 25, 2005

References

marc.info
securitytracker.com / id
Exploit
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A100031
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11772
gentoo.org / security/en/glsa/glsa-200503-10.xml
Patch
gentoo.org / security/en/glsa/glsa-200503-30.xml
Patch
mikx.de
Exploit
mozilla.org / security/announce/mfsa2005-27.html
redhat.com / support/errata/RHSA-2005-176.html
redhat.com / support/errata/RHSA-2005-384.html