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CVE-2012-6471· NVD / CVE Program· CNA mitre

Opera before 12.12 allows remote attackers to spoof the address field via a high rate of HTTP requests.

MediumCVSS 5.0 · v2.0—No exploit No fix recorded

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Published
Jan 2, 2013
Updated
Jun 16, 2026
EPSS
1.5% · 73th percentile
CWE
—
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Report tools

JSON

Action score

20

Monitor

Low priority for now.

CVSS
20 / 40 · 5.0 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.5%

Affected systems

VendorProduct
operaopera browser

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • opera opera browserup to 12.11 inclusive
  • opera opera browser1.00
  • opera opera browser10.00
  • opera opera browser10.01
  • opera opera browser10.10
  • opera opera browser10.11
  • opera opera browser10.20
  • opera opera browser10.50
  • opera opera browser10.51
  • opera opera browser10.52
  • opera opera browser10.53
  • opera opera browser10.54
  • opera opera browser10.60
  • opera opera browser10.61
  • opera opera browser10.62
  • opera opera browser10.63
  • opera opera browser11.00
  • opera opera browser11.01
  • opera opera browser11.10
  • opera opera browser11.11

Same product

opera: all records

Other highest-scoring records for the same primary product.

  • CVE-2010-1349Integer overflow in Opera 10.10 through 10.50 allows remote attackers to execute arbitrary code via a large Content-Length value, which trig
    46Plan
  • CVE-2011-2628Opera before 11.11 does not properly implement FRAMESET elements, which allows remote attackers to execute arbitrary code or cause a denial
    44Plan
  • CVE-2012-3561Opera before 11.64 does not properly allocate memory for URL strings, which allows remote attackers to execute arbitrary code or cause a den
    42Plan
  • CVE-2011-4684Opera before 11.60 does not properly handle certificate revocation, which has unspecified impact and remote attack vectors related to "corne
    42Plan
  • CVE-2007-6521Unspecified vulnerability in Opera before 9.25 allows remote attackers to execute arbitrary code via crafted TLS certificates.
    42Plan
  • CVE-2013-3211Unspecified vulnerability in Opera before 12.15 has unknown impact and attack vectors, related to a "moderately severe issue."
    41Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Technical details

Attack conditions

  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
P · data or configuration can be modified
Availability
none
Attack complexity
Low
Confidentiality impact
None
Integrity impact
P
Availability impact
None

Weakness class (CWE)

—

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records