Buffer overflow in Znc Znc-Msvc

CVE-2013-7049

Stack-based buffer overflow in fish.cpp in the Fish plugin for ZNC, as used in ZNC for Windows (znc-msvc) 0.206 and earlier, allows remote attackers to cause a denial of service (crash) via a long string in a DH1080_INIT message.

Vulnerability class: Buffer Overflow

Published 2013-12-23 · last modified 2026-06-17.

CVSS v2 metric

CVSS v2 base score 4.3 (Medium). Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.017 (75.7th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 75.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000

Affected products

Znc Znc-Msvc — versions 0.076, 0.077, 0.078

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

code.google.com/p/znc-msvc/
seclists.org/oss-sec/2013/q4/482 (mailing-list)
exchange.xforce.ibmcloud.com/vulnerabilities/89671 (vdb-entry)
www.securityfocus.com/bid/64254 (vdb-entry)
osvdb.org/100859 (vdb-entry)
seclists.org/oss-sec/2013/q4/489 (mailing-list)