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CVE-2011-2500

24
FAUCET Score

CVE-2011-2500 is a vulnerability in the host_reliable_addrinfo function of nfs-utils before version 1.2.4, affecting Linux NFS implementations. It allows remote attackers to mount unauthorized filesystems by manipulating DNS A and PTR records. With a CVSS score of 7.5, this vulnerability is considered highly severe due to its network attack vector, low attack complexity, and potential for full confidentiality, integrity, and availability impact. There is no evidence of active exploitation, public exploit code, or significant community discussion, suggesting a low current threat level.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.2.3CPE matchmatch criteria
cpe:2.3:a:linux-nfs:nfs-utils:*:*:*:*:*:*:*:*
1.2.0CPE matchmatch criteria
cpe:2.3:a:linux-nfs:nfs-utils:1.2.0:*:*:*:*:*:*:*
1.2.1CPE matchmatch criteria
cpe:2.3:a:linux-nfs:nfs-utils:1.2.1:*:*:*:*:*:*:*
1.2.2CPE matchmatch criteria
cpe:2.3:a:linux-nfs:nfs-utils:1.2.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.54%
Probability of exploitation in next 30 days
EPSS Percentile
83.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0254 is in the 70th percentile among its peer group of 51,466 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: nfs-utils-1:1.2.3-15.el6
View patch

Vendor Advisories (1)

redhatCVE-2011-2500Low

nfs-utils: Improper authentication of an incoming request when an IP based authentication used

Jun 22, 2011

References

marc.info
rhn.redhat.com / errata/RHSA-2011-1534.html
bugzilla.redhat.com / show_bug.cgi
sourceforge.net / projects/nfs/files/nfs-utils/1.2.4
sourceforge.net / projects/nfs/files/nfs-utils/1.2.4/Changelog-nfs-utils-1.2.4/download