Which products and versions are affected by CVE-2009-2477?

Affected: Firefox (Mozilla) versions 3.5. The full list is in the CVE brief.

Is CVE-2009-2477 being exploited in the wild?

It is exploited in the wild, listed in Industry KEV feed since May 1, 2010.

Is CVE-2009-2477 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2009-2477?

Public exploit code is available.

Is there a fix for CVE-2009-2477?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2009-2477 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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Emerging threatsCritical

CVE-2009-2477Firefox Code Injection

firefox 3.5 various flaws

Published Jul 14, 2009 · Updated Aug 7, 2024

Key Facts

Patch immediately

CVE-2009-2477 is a critical-severity vulnerability (CVSS 9.3 v2) affecting Firefox (Mozilla).
It is exploited in the wild, listed in Industry KEV feed since May 1, 2010. Public exploit code is available.
EPSS estimates a 43% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

Scores

CVSS v2

9.3

AV:N/AC:M/Au:N/C:C/I:C/A:C

EPSS (30-day exploit likelihood)

43%

Higher than 98.6% of all scored CVEs

Exploit maturity

Weaponized

ATLAS score

59/100

Publication score, see How it works

Exploitation Verdict

KEV listed

May 1, 2010

Federal due date

None

No federal due date

Ransomware use

Not reported

Attributed actors

None named

Exploit & Defence Guidance

Exploit maturity

Weaponized

Public exploit code

Proof-of-concept links

In-the-wild evidence

Reports of active use

Advisories And Exploit References

advisory35798
patchhttp://www.mozilla.org/security/announce/2009/mfsa2009-41.html
patchADV-2009-1868

Description

js/src/jstracer.cpp in the Just-in-time (JIT) JavaScript compiler (aka TraceMonkey) in Mozilla Firefox 3.5 before 3.5.1 allows remote attackers to execute arbitrary code via certain use of the escape function that triggers access to uninitialized memory locations, as originally demonstrated by a document containing P and FONT elements.

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
Industry KEV feed	May 1, 2010	n/a	Not reported

Affected Products

1 affected entries in total

Product	Affected versions	Fixed in
FirefoxMozilla	3.5	n/a

Timeline

Publicly disclosed
Jul 14, 2009
Added to Industry KEV feed
May 1, 2010
Last updated
Aug 7, 2024

Weakness Type

CWE-94 Improper Control of Generation of Code ('Code Injection')

References

15 more references in the full CVE brief

FAQ

Common Questions.

js/src/jstracer.cpp in the Just-in-time (JIT) JavaScript compiler (aka TraceMonkey) in Mozilla Firefox 3.5 before 3.5.1 allows remote attackers to execute arbitrary code via certain use of the escape function that triggers access to uninitialized memory locations, as originally demonstrated by a document containing P…
Affected: Firefox (Mozilla) versions 3.5. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since May 1, 2010.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

Is CVE-2009-2477 On Your Attack Surface?

Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.