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CVE-2009-1234

23
FAUCET Score

CVE-2009-1234 describes a denial-of-service vulnerability affecting Opera browser versions 9.64 and 9.52. Remote attackers can crash the application by providing an XML document with an excessive number of unclosed start-tags. This vulnerability has a CVSS score of 4.3, indicating a medium attack complexity and a partial availability impact, requiring no authentication. While not listed in CISA's KEV catalog, a public exploit (EDB-8320) exists, demonstrating the feasibility of the attack. Despite this, there is no evidence of active exploitation or significant community discussion surrounding this decade-old vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
9.52CPE matchmatch criteria
cpe:2.3:a:opera:opera_browser:9.52:*:*:*:*:*:*:*
9.64CPE matchmatch criteria
cpe:2.3:a:opera:opera_browser:9.64:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
7.20%
Probability of exploitation in next 30 days
EPSS Percentile
93.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-8320 · Mar 30, 2009
This CVE's current EPSS score of 0.0720 is in the 93rd percentile among its peer group of 19,958 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

lists.opensuse.org / opensuse-security-announce/2009-09/msg00001.html
exchange.xforce.ibmcloud.com / vulnerabilities/49522
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5432
exploit-db.com / exploits/8320
websecurity.com.ua / 3216
securityfocus.com / bid/34298
Exploit