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NVD / CVE Program· CNA redhat

CVE-2012-0057: PHP before 5.3.9 has improper libxslt security settings, which allows remote attackers to create arbitrary files via a crafted XSLT…

MediumCVSS 6.4 · v2.0—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 26/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 3% (FIRST EPSS); higher than 87.7% of all records.
  • No special conditions are required; it is repeatable.
  • Fixed version: php5 (Debian:5.0) 5.2.6.dfsg.1-1+lenny14; php5 (Debian:6.0) 5.3.3-7+squeeze5; php (Red Hat:enterprise_linux:5::client_workstation) 0:5.1.6-39.el5_8.

Low priority for now. Upgrade to php5 (Debian:5.0) 5.2.6.dfsg.1-1+lenny14; php5 (Debian:6.0) 5.3.3-7+squeeze5; php (Red Hat:enterprise_linux:5::client_workstation) 0:5.1.6-39.el5_8 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

PHP before 5.3.9 has improper libxslt security settings, which allows remote attackers to create arbitrary files via a crafted XSLT stylesheet that uses the libxslt output extension.

Published
Feb 1, 2012
Updated
Jun 16, 2026
EPSS
3.0% · 87th percentile

Report tools

JSON

Action score

26

Monitor

Low priority for now.

CVSS
25 / 40 · 6.4 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 3.0%

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  • A fix has been released

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  • when exploit code appears or is weaponized
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  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
phpphp

Using php? Add it to your stack and be the first to know about CVEs like this one. (PHP)

Watch new CVEs for php

When you'll hear from us

  • when a new CVE affecting this product is published
  • when a record in your stack enters KEV or is weaponized

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits every 10 minutes on paid plans, on the hour on the free plan.

Your free account also gets you

  • CVE alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools, at most 30 a day (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

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Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every Monday

Affected versions

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

  • php phpup to 5.3.8 inclusive
  • php php5.0.0
  • php php5.0.1
  • php php5.0.2
  • php php5.0.3
  • php php5.0.4
  • php php5.0.5
  • php php5.1.0
+12 more rows
  • php php5.1.1
  • php php5.1.2
  • php php5.1.3
  • php php5.1.4
  • php php5.1.5
  • php php5.1.6
  • php php5.2.0
  • php php5.2.1
  • php php5.2.10
  • php php5.2.11
  • php php5.2.12
  • php php5.2.13

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:5.0php5before 5.2.6.dfsg.1-1+lenny145.2.6.dfsg.1-1+lenny14
Debian:6.0php5before 5.3.3-7+squeeze55.3.3-7+squeeze5
Red Hat:enterprise_linux:5::client_workstationphpbefore 0:5.1.6-39.el5_80:5.1.6-39.el5_8
Red Hat:enterprise_linux:5::client_workstationphp-bcmathbefore 0:5.1.6-39.el5_80:5.1.6-39.el5_8
Red Hat:enterprise_linux:5::client_workstationphp-clibefore 0:5.1.6-39.el5_80:5.1.6-39.el5_8
Red Hat:enterprise_linux:5::client_workstationphp-commonbefore 0:5.1.6-39.el5_80:5.1.6-39.el5_8
Red Hat:enterprise_linux:5::client_workstationphp-dbabefore 0:5.1.6-39.el5_80:5.1.6-39.el5_8
Red Hat:enterprise_linux:5::client_workstationphp-debuginfobefore 0:5.1.6-39.el5_80:5.1.6-39.el5_8
Red Hat:enterprise_linux:5::client_workstationphp-develbefore 0:5.1.6-39.el5_80:5.1.6-39.el5_8
Red Hat:enterprise_linux:5::client_workstationphp-gdbefore 0:5.1.6-39.el5_80:5.1.6-39.el5_8
Red Hat:enterprise_linux:5::client_workstationphp-imapbefore 0:5.1.6-39.el5_80:5.1.6-39.el5_8
Red Hat:enterprise_linux:5::client_workstationphp-ldapbefore 0:5.1.6-39.el5_80:5.1.6-39.el5_8
Red Hat:enterprise_linux:5::client_workstationphp-mbstringbefore 0:5.1.6-39.el5_80:5.1.6-39.el5_8
Red Hat:enterprise_linux:5::client_workstationphp-mysqlbefore 0:5.1.6-39.el5_80:5.1.6-39.el5_8
Red Hat:enterprise_linux:5::client_workstationphp-ncursesbefore 0:5.1.6-39.el5_80:5.1.6-39.el5_8
Red Hat:enterprise_linux:5::client_workstationphp-odbcbefore 0:5.1.6-39.el5_80:5.1.6-39.el5_8
Red Hat:enterprise_linux:5::client_workstationphp-pdobefore 0:5.1.6-39.el5_80:5.1.6-39.el5_8
Red Hat:enterprise_linux:5::client_workstationphp-pgsqlbefore 0:5.1.6-39.el5_80:5.1.6-39.el5_8
Red Hat:enterprise_linux:5::client_workstationphp-snmpbefore 0:5.1.6-39.el5_80:5.1.6-39.el5_8
Red Hat:enterprise_linux:5::client_workstationphp-soapbefore 0:5.1.6-39.el5_80:5.1.6-39.el5_8
Red Hat:enterprise_linux:5::client_workstationphp-xmlbefore 0:5.1.6-39.el5_80:5.1.6-39.el5_8
Red Hat:enterprise_linux:5::client_workstationphp-xmlrpcbefore 0:5.1.6-39.el5_80:5.1.6-39.el5_8
Red Hat:enterprise_linux:5::client_workstationphp53before 0:5.3.3-13.el5_80:5.3.3-13.el5_8
Red Hat:enterprise_linux:5::client_workstationphp53-bcmathbefore 0:5.3.3-13.el5_80:5.3.3-13.el5_8

+47

Same product

php: all records

Other highest-scoring records for the same primary product.

  • CVE-2024-4577Argument Injection in PHP-CGIKEV
    99Now
  • CVE-2019-11043Underflow in PHP-FPM can lead to RCEKEV
    99Now
  • CVE-2012-1823sapi/cgi/cgi_main.c in PHP before 5.3.12 and 5.4.x before 5.4.2, when configured as a CGI script (aka php-cgi), does not properly handle…KEV
    99Now

Published before and after this one in the same product

  • ← EarlierCVE-2011-4153Jan 18, 2012 · PHP 5.3.8 does not always check the return value of the zend_strndup function, which might allow remote attackers to cause a denial of…
    24Monitor
  • ← EarlierCVE-2012-0781Jan 18, 2012 · The tidy_diagnose function in PHP 5.3.8 might allow remote attackers to cause a denial of service (NULL pointer dereference and application…
    23Monitor
  • Later →CVE-2012-0830Feb 6, 2012 · The php_register_variable_ex function in php_variables.c in PHP 5.3.9 allows remote attackers to execute arbitrary code via a request…
    39Monitor

Remediation

Which version to upgrade to

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

Product / packageFixed versionSource
debian:php55.3.3-7+squeeze5 · Debian:6.0Package registry (OSV)
red hat:php0:5.1.6-39.el5_8 · Red Hat:enterprise_linux:5::client_workstationPackage registry (OSV)
red hat:php-bcmath0:5.1.6-39.el5_8 · Red Hat:enterprise_linux:5::client_workstationPackage registry (OSV)
red hat:php-cli0:5.1.6-39.el5_8 · Red Hat:enterprise_linux:5::client_workstationPackage registry (OSV)
red hat:php-common0:5.1.6-39.el5_8 · Red Hat:enterprise_linux:5::client_workstationPackage registry (OSV)
red hat:php-dba0:5.1.6-39.el5_8 · Red Hat:enterprise_linux:5::client_workstationPackage registry (OSV)
red hat:php-debuginfo0:5.1.6-39.el5_8 · Red Hat:enterprise_linux:5::client_workstationPackage registry (OSV)
red hat:php-devel0:5.1.6-39.el5_8 · Red Hat:enterprise_linux:5::client_workstationPackage registry (OSV)
red hat:php-gd0:5.1.6-39.el5_8 · Red Hat:enterprise_linux:5::client_workstationPackage registry (OSV)
red hat:php-imap0:5.1.6-39.el5_8 · Red Hat:enterprise_linux:5::client_workstationPackage registry (OSV)
red hat:php-ldap0:5.1.6-39.el5_8 · Red Hat:enterprise_linux:5::client_workstationPackage registry (OSV)
red hat:php-mbstring0:5.1.6-39.el5_8 · Red Hat:enterprise_linux:5::client_workstationPackage registry (OSV)
red hat:php-mysql0:5.1.6-39.el5_8 · Red Hat:enterprise_linux:5::client_workstationPackage registry (OSV)

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.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • No special conditions are required; it is repeatable.

If successful

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

Weakness class (CWE)

CWE-264 · Permissions, Privileges, and Access Controls

CVSS vector

AV:N/AC:L/Au:N/C:P/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.

References

Show all references (19 more)

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

All records