4.3

CVE-2008-4066: mozilla firefox Cross-site Scripting

CVSS: 4.3v2.0MediumModified
Published 24-09-2008Last modified 07-08-2024

Vulnerability summary

CVE-2008-4066 is a medium (CVSS 4.3) Cross-site Scripting vulnerability in mozilla firefox. EPSS estimates a 1.76% chance of exploitation in the next 30 days, higher than 77.6% of scored vulnerabilities. 2 public exploits are recorded.

Overall risk
28/100
0100
Medium · default modelHow is this calculated?
CVSS score
4.3/10
010
Medium · v2.0 (NVD)
EPSS score
1.76%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits2reference

Advisory lineage

Upstream 0 · Downstream 4

Timeline

  1. 24-09-2008
    PublishedVulnerability first disclosed.
  2. 07-08-2024
    Last modifiedVulnerability information updated.

Description

Mozilla Firefox 2.0.0.14, and other versions before 2.0.0.17, allows remote attackers to bypass cross-site scripting (XSS) protection mechanisms and conduct XSS attacks via HTML-escaped low surrogate characters that are ignored by the HTML parser, as demonstrated by a "jav&#56325ascript" sequence, aka "HTML escaped low surrogates bug."

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

1.76%

Chance of exploitation in the next 30 days

Percentile

78%

Versus all other CVEs

30-day change

0.00 pp

From 1.76% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.76%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

2 found
  • referenceUnverified

    Exploit Reference (thespanner.co.uk)

    Maturity: unknown

  • referenceUnverified

    Exploit Reference (blogs.technet.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Mozilla1 product
  • firefox2.0.0.14 | 2.0.0.15 | 2.0.0.16

1 vendor · 1 product

References

44 links
Show all 44 references