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CVE-2011-1920

15
FAUCET Score

CVE-2011-1920 describes a local privilege escalation vulnerability affecting NetBSD before version 1.6.2 and pmake 1.111. This flaw allows a local attacker to overwrite arbitrary files through a symlink attack on temporary files created in /tmp, specifically related to bsd.lib.mk and bsd.prog.mk. The vulnerability has a CVSS score of 3.3 (low severity), indicating a local attack vector with medium complexity and potential for partial integrity and availability impact. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:netbsd:netbsd:*:*:*:*:*:*:*:*
<= 1.6.1CPE matchmatch criteria
cpe:2.3:o:netbsd:netbsd:*:*:*:*:*:*:*:*
1.0CPE matchmatch criteria
cpe:2.3:o:netbsd:netbsd:1.0:*:*:*:*:*:*:*
1.1CPE matchmatch criteria
cpe:2.3:o:netbsd:netbsd:1.1:*:*:*:*:*:*:*
1.2CPE matchmatch criteria
cpe:2.3:o:netbsd:netbsd:1.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

3.3LOW

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

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
3.4
Impact Score
4.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.44%
Probability of exploitation in next 30 days
EPSS Percentile
35.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0044 is in the 81st percentile among its peer group of 747 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 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

Patch Available

Vendor Patches (2)

redhatpatch availablevia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: pmake

Vendor Advisories (1)

redhatCVE-2011-1920Low

mk-files: insecure temporary file usage

May 14, 2011

References

bugs.debian.org / cgi-bin/bugreport.cgi
ExploitPatch
cvsweb.netbsd.org / bsdweb.cgi/src/share/mk/bsd.lib.mk.diff
Patch
cvsweb.netbsd.org / bsdweb.cgi/src/share/mk/bsd.prog.mk.diff
Patch
openwall.com / lists/oss-security/2011/05/16/2
ExploitPatch
openwall.com / lists/oss-security/2011/05/16/8
Patch
bugzilla.redhat.com / show_bug.cgi
ExploitPatch
bugzilla.redhat.com / show_bug.cgi
Patch
exchange.xforce.ibmcloud.com / vulnerabilities/67495
securityfocus.com / bid/47878