Which products and versions are affected by CVE-2011-5003?

Affected: Media Composer (Avid). The full list is in the CVE brief.

Is CVE-2011-5003 being exploited in the wild?

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

Is CVE-2011-5003 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-2011-5003?

Public exploit code is available.

Is there a fix for CVE-2011-5003?

Fixed versions are available, including Media Composer 5.5.3.

How urgently should CVE-2011-5003 be patched?

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

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Vulnerability Intelligence

CVE-2011-5003

CriticalPublic exploit

Stack-based buffer overflow in the Phonetic Indexer (AvidPhoneticIndexer.exe) in Avid Media Composer 5.5.3 and earlier allows remote attackers to execute arbitrary code via a long request to TCP port 4659.

Published Dec 24, 2011 · Updated Apr 28, 2026

Key Facts

Patch immediately

CVE-2011-5003 is a critical-severity vulnerability (CVSS 10.0 v2) affecting Media Composer (Avid).
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 Media Composer 5.5.3.
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-2011-5003 brief as a PDF

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

Description

Affected Products

1 affected entries in total

Product	Affected versions	Fixed in
Media ComposerAvid	See advisory	5.5.3

Patched Releases

Media Composer

5.5.3

Timeline

Publicly disclosed
Dec 24, 2011
Last updated
Apr 28, 2026

Weakness Type

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

References

advisory47047
exploitMSF avidphoneticindexer.rb
exploitExploitDB-18183
otheravidmedia-avidphoneticindexer-bo(71514)
other18183

3 more references in the full CVE brief

FAQ

Common Questions.

Stack-based buffer overflow in the Phonetic Indexer (AvidPhoneticIndexer.exe) in Avid Media Composer 5.5.3 and earlier allows remote attackers to execute arbitrary code via a long request to TCP port 4659.
Affected: Media Composer (Avid). 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 Media Composer 5.5.3.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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