6.4

CVE-2013-4851: freebsd

CVSS: 6.4v2.0MediumModified
Published 28-07-2013Last modified 06-08-2024
Open JSON

Vulnerability summary

CVE-2013-4851 is a medium (CVSS 6.4) vulnerability in freebsd. EPSS estimates a 2.14% chance of exploitation in the next 30 days, higher than 81.7% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.4/10
010
Medium · v2.0 (NVD)
EPSS score
2.14%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1
DSA-2743-1

Timeline

  1. 28-07-2013
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

The vfs_hang_addrlist function in sys/kern/vfs_export.c in the NFS server implementation in the kernel in FreeBSD 8.3 and 9.x through 9.1-RELEASE-p5 controls authorization for host/subnet export entries on the basis of group information sent by the client, which allows remote attackers to bypass file permissions on NFS filesystems via crafted requests.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

2.14%

Chance of exploitation in the next 30 days

Percentile

82%

Versus all other CVEs

30-day change

0.00 pp

From 2.14% on 20-09-2026

20-09-202620-10-2026
EPSS score
2.14%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Freebsd1 product
  • freebsdEOL8.3 | 9.0 | 9.1 | 9.1:p4 | 9.1:p5

1 vendor · 1 product

References

3 links