CVE-2009-2540

Opera < 9.64 - Denial of Service via Large Select Object Length Property

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2009-2540. PoCs published by Thierry Zoller.

AI-analyzed exploit summary This is a detailed technical analysis of CVE-2009-2542, a DoS vulnerability affecting multiple browsers and devices due to improper handling of the select() method with a large integer, leading to memory exhaustion. The writeup includes root cause analysis, affected products, patch status, and a proof-of-concept.

Description

Opera, possibly 9.64 and earlier, allows remote attackers to cause a denial of service (memory consumption) via a large integer value for the length property of a Select object, a related issue to CVE-2009-1692.

Exploits (1)

exploitdb WRITEUP VERIFIED
by Thierry Zoller · textdosmultiple
https://www.exploit-db.com/exploits/9160

This is a detailed technical analysis of CVE-2009-2542, a DoS vulnerability affecting multiple browsers and devices due to improper handling of the select() method with a large integer, leading to memory exhaustion. The writeup includes root cause analysis, affected products, patch status, and a proof-of-concept.

Classification
Writeup 100%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Multiple browsers (IE5-8, Firefox, Chrome, Opera, Safari, etc.) and devices (iPhone, PS3, Wii, etc.)
No auth needed
Prerequisites: Browser or device with JavaScript support
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (8)

Core 8
Core References
Broken Link, Exploit x_refsource_misc
http://www.g-sec.lu/one-bug-to-rule-them-all.html
Broken Link, Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/504988/100/0/threaded
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/52874
Broken Link, Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/505006/100/0/threaded
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
http://www.exploit-db.com/exploits/9160
Broken Link, Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/504969/100/0/threaded
Broken Link, Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/504989/100/0/threaded

Scores

EPSS 0.0305
EPSS Percentile 85.9%

Details

CWE
CWE-770
Status published
Products (1)
opera/opera_browser < 9.64
Published Jul 20, 2009
Tracked Since Feb 18, 2026