Which products and versions are affected by CVE-2009-0323?

Affected: Amaya (W3) versions 0.9, 0.95b, 1.0, 10.0, 1.0a, 1.1, 1.1a, 1.1c. The full list is in the CVE brief.

Is CVE-2009-0323 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2009-0323 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-2009-0323?

Public exploit code is available.

Is there a fix for CVE-2009-0323?

Fixed versions are available, including Amaya 11.0.

How urgently should CVE-2009-0323 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2009-0323

CriticalPublic exploit

Published Jan 28, 2009 · Updated Apr 22, 2026

Key Facts

Patch immediately

CVE-2009-0323 is a critical-severity vulnerability (CVSS 10.0 v2) affecting Amaya (W3).
It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
EPSS estimates a 62% probability of exploitation in the next 30 days.
Fixed versions are available, including Amaya 11.0.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v2

10.0

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

EPSS (30-day exploit likelihood)

62%

Higher than 99.1% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2009-0323 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Multiple stack-based buffer overflows in W3C Amaya Web Browser 10.0 and 11.0 allow remote attackers to execute arbitrary code via (1) a long type parameter in an input tag, which is not properly handled by the EndOfXmlAttributeValue function; (2) an "HTML GI" in a start tag, which is not properly handled by the ProcessStartGI function; and unspecified vectors in (3) html2thot.c and (4) xml2thot.c, related to the msgBuffer variable. NOTE: these are different vectors than CVE-2008-6005.

Affected Products

71 affected entries in total

Product	Affected versions	Fixed in
AmayaW3	0.9, 0.95b, 1.0, 10.0, 1.0a, 1.1, 1.1a, 1.1c	11.0

Patched Releases

Amaya

11.0

Timeline

Publicly disclosed
Jan 28, 2009
Last updated
Apr 22, 2026

Weakness Type

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

exploitMSF amaya_bdo.rb
exploitExploitDB-16548
exploithttp://www.coresecurity.com/content/amaya-buffer-overflows
otheramaya-html-tags-bo(48325)
other7902

1 more references in the full CVE brief

FAQ

Common Questions.

Multiple stack-based buffer overflows in W3C Amaya Web Browser 10.0 and 11.0 allow remote attackers to execute arbitrary code via (1) a long type parameter in an input tag, which is not properly handled by the EndOfXmlAttributeValue function; (2) an "HTML GI" in a start tag, which is not properly handled by the Proces…
Affected: Amaya (W3) versions 0.9, 0.95b, 1.0, 10.0, 1.0a, 1.1, 1.1a, 1.1c. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Amaya 11.0.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

Is CVE-2009-0323 Running On Your Attack Surface?

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