CVE-2009-1234

Opera Browser 9.52 and 9.64 - Denial of Service via Malformed XML Document

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2009-1234. PoCs published by Ahmed Obied.

AI-analyzed exploit summary This exploit targets a buffer overflow vulnerability in Opera 9.64 by serving a maliciously crafted XML file with an oversized string. The exploit sets up a simple HTTP server to deliver the payload when a victim visits the server.

Description

Opera 9.64 allows remote attackers to cause a denial of service (application crash) via an XML document containing a long series of start-tags with no corresponding end-tags. NOTE: it was later reported that 9.52 is also affected.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Ahmed Obied · pythondosmultiple
https://www.exploit-db.com/exploits/8320

This exploit targets a buffer overflow vulnerability in Opera 9.64 by serving a maliciously crafted XML file with an oversized string. The exploit sets up a simple HTTP server to deliver the payload when a victim visits the server.

Classification
Working Poc 90%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: Opera 9.64
No auth needed
Prerequisites: Victim must visit the malicious HTTP server · Opera 9.64 must be used by the victim
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (6)

Core 6
Core References
Exploit, Third Party Advisory exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/8320
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/49522
Various Sources x_refsource_misc
http://websecurity.com.ua/3216/
Exploit vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/34298
Third Party Advisory, VDB Entry vdb-entry signature x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5432

Scores

EPSS 0.0720
EPSS Percentile 93.5%

Details

CWE
CWE-20
Status published
Products (2)
opera/opera_browser 9.52
opera/opera_browser 9.64
Published Apr 02, 2009
Tracked Since Feb 18, 2026