How severe is CVE-2010-2950?

CVE-2010-2950 has a CVSS 2.0 base score of 6.8, rated medium severity.

Is CVE-2010-2950 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-2950?

CVE-2010-2950 primarily affects Php. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2010-2950?

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

When was CVE-2010-2950 published?

CVE-2010-2950 was published on 2010-09-28 and last updated on 2026-06-16.

CVE-2010-2950

CVE-2010-2950 is a medium-severity vulnerability in Php with a CVSS 2.0 base score of 6.8. 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-134.

Key facts

Severity: Medium (CVSS 2.0 base score 6.8)
EPSS exploit prediction: 6% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-134
Affected product: Php
Published: 2010-09-28
Last modified: 2026-06-16

Description

Format string vulnerability in stream.c in the phar extension in PHP 5.3.x through 5.3.3 allows context-dependent attackers to obtain sensitive information (memory contents) and possibly execute arbitrary code via a crafted phar:// URI that is not properly handled by the phar_stream_flush function, leading to errors in the php_stream_wrapper_log_error function. NOTE: this vulnerability exists because of an incomplete fix for CVE-2010-2094.

Frequently asked questions

What is CVE-2010-2950?: Format string vulnerability in stream.c in the phar extension in PHP 5.3.x through 5.3.3 allows context-dependent attackers to obtain sensitive information (memory contents) and possibly execute arbitrary code via a crafted phar:// URI that is not properly handled by the phar_stream_flush function, leading to errors in the php_stream_wrapper_log_error function. NOTE: this vulnerability exists because of an incomplete fix for CVE-2010-2094.
How severe is CVE-2010-2950?: CVE-2010-2950 has a CVSS 2.0 base score of 6.8, rated medium severity.
Is CVE-2010-2950 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-2950?: CVE-2010-2950 primarily affects Php. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2010-2950?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2010-2950 published?: CVE-2010-2950 was published on 2010-09-28 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:a:php:php:5.3.0:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.3.1:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.3.2:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.3.3:*:*:*:*:*:*:*

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Threat intelligence

Threat-intel indicators referencing this CVE:

221.161.235.168 (ipv4-addr)
103.20.122.54 (ipv4-addr)
220.88.220.59 (ipv4-addr)
211.253.10.61 (ipv4-addr)
121.78.158.30 (ipv4-addr)
121.132.27.238 (ipv4-addr)
103.84.236.242 (ipv4-addr)
14.63.192.228 (ipv4-addr)