CVE-2011-4617

virtualenv.py in virtualenv before 1.5 allows local users to overwrite arbitrary files via a symlink attack on a certain file in /tmp/.

Published: 2011-12-31 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-4617 is rated Low Risk (13.4/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.32%). Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2011-4617

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.04% 0.32% +0.29%
2 2025-08-31 0.05% 0.04% -0.01%
3 2025-03-17 — 0.05% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-4617

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
1.2 2.0 LOW
AV:L/AC:H/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:H)
Exploitation requires uncommon or highly specific conditions.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 1.9 2.9 [email protected]

Weakness enumeration for CVE-2011-4617

GitHub Security Advisory for CVE-2011-4617

GHSA-3jhc-wjqf-5f2c · Severity: medium · Ecosystem: pip — Virtualenv Allows Symlink Attack on /tmp/

OS Trackers for CVE-2011-4617

vendor priority summary link
debian low CVE-2011-4617 low priority: Debian including 1 source packages (python-virtualenv), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2011-4617
gentoo normal CVE-2011-4617: 1 GLSA(s) (201206-17), 1 atom(s) (dev-python/virtualenv); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2011-4617
ubuntu medium CVE-2011-4617 medium priority: Ubuntu including 1 source packages (python-virtualenv), 10 status rows across 10 suites (hardy, lucid, maverick, natty, oneiric, precise, quantal, raring, saucy, upstream): not-affected 5, ignored 3, DNE 1, released 1. https://ubuntu.com/security/CVE-2011-4617

Affected software / configurations for CVE-2011-4617

Vendor Product Version Raw CPE
python virtualenv <= 1.4.9 cpe:2.3:a:python:virtualenv:*:*:*:*:*:*:*:*
python virtualenv 0.8 cpe:2.3:a:python:virtualenv:0.8:*:*:*:*:*:*:*
python virtualenv 0.8.1 cpe:2.3:a:python:virtualenv:0.8.1:*:*:*:*:*:*:*
python virtualenv 0.8.2 cpe:2.3:a:python:virtualenv:0.8.2:*:*:*:*:*:*:*
python virtualenv 0.8.3 cpe:2.3:a:python:virtualenv:0.8.3:*:*:*:*:*:*:*
python virtualenv 0.8.4 cpe:2.3:a:python:virtualenv:0.8.4:*:*:*:*:*:*:*
python virtualenv 0.9 cpe:2.3:a:python:virtualenv:0.9:*:*:*:*:*:*:*
python virtualenv 0.9.1 cpe:2.3:a:python:virtualenv:0.9.1:*:*:*:*:*:*:*
python virtualenv 0.9.2 cpe:2.3:a:python:virtualenv:0.9.2:*:*:*:*:*:*:*
python virtualenv 1.0 cpe:2.3:a:python:virtualenv:1.0:*:*:*:*:*:*:*
python virtualenv 1.1 cpe:2.3:a:python:virtualenv:1.1:*:*:*:*:*:*:*
python virtualenv 1.1.1 cpe:2.3:a:python:virtualenv:1.1.1:*:*:*:*:*:*:*
python virtualenv 1.2 cpe:2.3:a:python:virtualenv:1.2:*:*:*:*:*:*:*
python virtualenv 1.3 cpe:2.3:a:python:virtualenv:1.3:*:*:*:*:*:*:*
python virtualenv 1.3.1 cpe:2.3:a:python:virtualenv:1.3.1:*:*:*:*:*:*:*
python virtualenv 1.3.2 cpe:2.3:a:python:virtualenv:1.3.2:*:*:*:*:*:*:*
python virtualenv 1.3.3 cpe:2.3:a:python:virtualenv:1.3.3:*:*:*:*:*:*:*
python virtualenv 1.3.4 cpe:2.3:a:python:virtualenv:1.3.4:*:*:*:*:*:*:*
python virtualenv 1.4 cpe:2.3:a:python:virtualenv:1.4:*:*:*:*:*:*:*
python virtualenv 1.4.1 cpe:2.3:a:python:virtualenv:1.4.1:*:*:*:*:*:*:*
python virtualenv 1.4.2 cpe:2.3:a:python:virtualenv:1.4.2:*:*:*:*:*:*:*
python virtualenv 1.4.3 cpe:2.3:a:python:virtualenv:1.4.3:*:*:*:*:*:*:*
python virtualenv 1.4.4 cpe:2.3:a:python:virtualenv:1.4.4:*:*:*:*:*:*:*
python virtualenv 1.4.5 cpe:2.3:a:python:virtualenv:1.4.5:*:*:*:*:*:*:*
python virtualenv 1.4.6 cpe:2.3:a:python:virtualenv:1.4.6:*:*:*:*:*:*:*
python virtualenv 1.4.7 cpe:2.3:a:python:virtualenv:1.4.7:*:*:*:*:*:*:*
python virtualenv 1.4.8 cpe:2.3:a:python:virtualenv:1.4.8:*:*:*:*:*:*:*

References for CVE-2011-4617

cvelogic Threat Intelligence