How severe is CVE-2012-6113?

CVE-2012-6113 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2012-6113 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-6113?

CVE-2012-6113 primarily affects Php. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-6113?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2012-6113 published?

CVE-2012-6113 was published on 2013-01-19 and last updated on 2026-06-16.

CVE-2012-6113

CVE-2012-6113 is a medium-severity vulnerability in Php with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Php
Published: 2013-01-19
Last modified: 2026-06-16

Description

The openssl_encrypt function in ext/openssl/openssl.c in PHP 5.3.9 through 5.3.13 does not initialize a certain variable, which allows remote attackers to obtain sensitive information from process memory by providing zero bytes of input data.

Frequently asked questions

What is CVE-2012-6113?: The openssl_encrypt function in ext/openssl/openssl.c in PHP 5.3.9 through 5.3.13 does not initialize a certain variable, which allows remote attackers to obtain sensitive information from process memory by providing zero bytes of input data.
How severe is CVE-2012-6113?: CVE-2012-6113 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2012-6113 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-6113?: CVE-2012-6113 primarily affects Php. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-6113?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-6113 published?: CVE-2012-6113 was published on 2013-01-19 and last updated on 2026-06-16.

References

Affected products (5)

cpe:2.3:a:php:php:5.3.9:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.3.10:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.3.11:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.3.12:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.3.13:*:*:*:*:*:*:*

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