Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2012-1171

19
FAUCET Score

CVE-2012-1171 describes a vulnerability in PHP 5.x, specifically within the libxml RSHUTDOWN function, that allows remote attackers to bypass the open_basedir protection. This bypass enables unauthorized reading of arbitrary files through a crafted stream_close method call when using a custom stream wrapper. The vulnerability has a CVSS score of 5.0, indicating a medium severity with low attack complexity and potential for information disclosure. There is no evidence of active exploitation, nor are there publicly available exploits in Metasploit, Nuclei, or ExploitDB, and it has received no significant community or media attention.

Impacted Technologies

VendorProductVersion(s)CPE
5.0.0CPE matchmatch criteria
cpe:2.3:a:php:php:5.0.0:*:*:*:*:*:*:*
5.0.0CPE matchmatch criteria
cpe:2.3:a:php:php:5.0.0:beta1:*:*:*:*:*:*
5.0.0CPE matchmatch criteria
cpe:2.3:a:php:php:5.0.0:beta2:*:*:*:*:*:*
5.0.0CPE matchmatch criteria
cpe:2.3:a:php:php:5.0.0:beta3:*:*:*:*:*:*
5.0.0CPE matchmatch criteria
cpe:2.3:a:php:php:5.0.0:beta4:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.81%
Probability of exploitation in next 30 days
EPSS Percentile
85.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0281 is in the 79th percentile among its peer group of 23,723 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Vendor Patches (1)

github_advisoryvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2012-1171Moderate

php: libxml RSHUTDOWN function disables the hooks which are used to implement open_basedir

Mar 13, 2012

References

bugs.php.net / bug.php
bugzilla.redhat.com / show_bug.cgi
github.com / php/php-src/blob/master/ext/libxml/tests/bug61367-read.phpt
Vendor Advisory
github.com / php/php-src/blob/master/ext/libxml/tests/bug61367-write.phpt