MEDIUM
CVE-2009-2540
CWE-770Published: July 20, 2009· Updated: Jun 16, 2026
4.3
CVSS v3.1
Official 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.
Technical Analysis
CVE-2009-2540 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityM
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityNone
IntegrityNone
AvailabilityP
AV:N/AC:M/Au:N/C:N/I:N/A:P
Affected Vendors & Products
opera1 product(s)
opera browser
Source: NVD CPE · 1 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (16)
→
http://www.exploit-db.com/exploits/9160Exploit · Third Party Advisory · VDB Entry
→
http://www.g-sec.lu/one-bug-to-rule-them-all.htmlBroken Link · Exploit
→
http://www.securityfocus.com/archive/1/504969/100/0/threadedBroken Link · Third Party Advisory · VDB Entry
→
http://www.securityfocus.com/archive/1/504988/100/0/threadedBroken Link · Third Party Advisory · VDB Entry
→
http://www.securityfocus.com/archive/1/504989/100/0/threadedBroken Link · Third Party Advisory · VDB Entry
→
http://www.securityfocus.com/archive/1/505006/100/0/threadedBroken Link · Third Party Advisory · VDB Entry
→
https://exchange.xforce.ibmcloud.com/vulnerabilities/52874Third Party Advisory · VDB Entry
→
→
http://www.exploit-db.com/exploits/9160Exploit · Third Party Advisory · VDB Entry
→
http://www.g-sec.lu/one-bug-to-rule-them-all.htmlBroken Link · Exploit
→
http://www.securityfocus.com/archive/1/504969/100/0/threadedBroken Link · Third Party Advisory · VDB Entry
→
http://www.securityfocus.com/archive/1/504988/100/0/threadedBroken Link · Third Party Advisory · VDB Entry
→
http://www.securityfocus.com/archive/1/504989/100/0/threadedBroken Link · Third Party Advisory · VDB Entry
→
http://www.securityfocus.com/archive/1/505006/100/0/threadedBroken Link · Third Party Advisory · VDB Entry
→
https://exchange.xforce.ibmcloud.com/vulnerabilities/52874Third Party Advisory · VDB Entry
Quick Facts
CVE IDCVE-2009-2540
CVSS Score4.3 / 10
SeverityMEDIUM
WeaknessCWE-770
CISA KEVNo
Affected1 vendor(s)
PublishedJul 20, 2009
Related CVEs (CWE-770)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2009-2540 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.