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CVE-2007-5540

20
FAUCET Score

CVE-2007-5540 describes an unspecified vulnerability in Opera versions prior to 9.24. This flaw allows remote attackers to bypass the same-origin policy by overwriting functions on pages from different domains. With a CVSS score of 7.5, it is considered highly severe due to its network-based attack vector, low attack complexity, and potential for partial compromise of confidentiality, integrity, and availability. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 9.23CPE matchmatch criteria
cpe:2.3:a:opera:opera_browser:*:*:*:*:*:*:*:*
1.00CPE matchmatch criteria
cpe:2.3:a:opera:opera_browser:1.00:*:*:*:*:*:*:*
2.00CPE matchmatch criteria
cpe:2.3:a:opera:opera_browser:2.00:*:*:*:*:*:*:*
2.10CPE matchmatch criteria
cpe:2.3:a:opera:opera_browser:2.10:*:*:*:*:*:*:*
2.10CPE matchmatch criteria
cpe:2.3:a:opera:opera_browser:2.10:beta1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.05%
Probability of exploitation in next 30 days
EPSS Percentile
86.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0305 is in the 75th percentile among its peer group of 51,551 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, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

bugs.gentoo.org / show_bug.cgi
lists.opensuse.org / opensuse-security-announce/2007-10/msg00008.html
osvdb.org / 38127
secunia.com / advisories/27277
Vendor Advisory
secunia.com / advisories/27399
secunia.com / advisories/27431
security.gentoo.org / glsa/glsa-200710-31.xml
opera.com / support/search/view/867
securityfocus.com / bid/26102
vupen.com / english/advisories/2007/3529