VDB-60880 · CVE-2012-1251 · BID 32323

Opera Web Browser up to 7.59 Certificates cryptographic issues

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability has been found in Opera Web Browser up to 7.59 (Web Browser) and classified as critical. This vulnerability affects an unknown functionality of the component Certificates. The manipulation with an unknown input leads to a cryptographic issues vulnerability. The CWE definition for the vulnerability is CWE-310. As an impact it is known to affect confidentiality, and integrity. CVE summarizes:

Opera before 9.63 does not properly verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.

The weakness was published 06/04/2012 (Website). The advisory is shared for download at opera.com. This vulnerability was named CVE-2012-1251 since 02/21/2012. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1600.

The vulnerability scanner Nessus provides a plugin with the ID 35185 (Opera < 9.63 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows.

Upgrading to version 7.60 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (35185). Similar entry is available at 45128.







CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍


Class: Cryptographic issues
CWE: CWE-310
ATT&CK: T1600

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 35185
Nessus Name: Opera < 9.63 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 802436
OpenVAS Name: Opera X.509 Certificates Spoofing Vulnerability (Linux)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Web Browser 7.60


02/21/2012 🔍
06/04/2012 +104 days 🔍
06/04/2012 +0 days 🔍
03/23/2015 +1022 days 🔍
12/03/2021 +2447 days 🔍


Vendor: opera.com

Advisory: opera.com
Status: Not defined

CVE: CVE-2012-1251 (🔍)
SecurityFocus: 32323

See also: 🔍


Created: 03/23/2015 04:50 PM
Updated: 12/03/2021 09:26 AM
Changes: 03/23/2015 04:50 PM (52), 01/13/2018 12:39 PM (6), 12/03/2021 09:26 AM (4)
Complete: 🔍


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