What is CVE-2015-5677?

CVE-2015-5677 is a medium-severity vulnerability in FreeBSD, classified under Information Disclosure. CVSS score: 5.5/10. Published 2017-02-07.

How severe is CVE-2015-5677?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Information disclosure in FreeBSD

CVE-2015-5677

bsnmpd, as used in FreeBSD 9.3, 10.1, and 10.2, uses world-readable permissions on the snmpd.config file, which allows local users to obtain the secret key for USM authentication by reading the file.

Vulnerability class: Information Disclosure

Published 2017-02-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.005 (40.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

FreeBSD — versions 9.3, 10.1, 10.2

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

www.securitytracker.com/id/1034678 (vdb-entry)
pierrekim.github.io/blog/2016-01-15-cve-2015-5677-freebsd-bsnmpd.html (Exploit, Third Party Advisory)
www.freebsd.org/security/advisories/FreeBSD-SA-16:06.bsnmpd.asc (vendor-advisory, Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2015-5677?: CVE-2015-5677 is a medium-severity vulnerability in FreeBSD, classified under Information Disclosure. CVSS score: 5.5/10. Published 2017-02-07.
How severe is CVE-2015-5677?: Medium severity. CVSS v3 base score is 5.5 out of 10.