kgb-bot 1.33-2 allows remote attackers to cause a denial of service (crash).

published 2017-08-28 9 y ago modified 2026-06-17 4 mo ago also EUVD-2015-1688

cvss: 7.5; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.5%; EPSS 1.5% chance of exploitation in 30 days, percentile 75%
public exploits: 0; none known

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2015-1554 updated 2025-11-21 cvss 2.6

kgb-bot: network traffic can trigger crash

Red Hat All currently supported Red Hat products
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.54% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.0	7.5	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness

CWE-20 Improper Input Validation

References

bugzilla.redhat.com /show_bug.cgi?id=1186590
issue-tracking, third-party-advisory
openwall.com /lists/oss-security/2015/02/08/1
mailing-list, third-party-advisory

Sources

CVE List CVE-2015-1554
NVD CVE-2015-1554

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary