What is CVE-2019-13486?

CVE-2019-13486 is a critical-severity vulnerability in Xymon, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2019-08-27.

How severe is CVE-2019-13486?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2019-13486 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Xymon

CVE-2019-13486

In Xymon through 4.3.28, a stack-based buffer overflow exists in the status-log viewer component because of   expansion in svcstatus.c.

Vulnerability class: Buffer Overflow

Published 2019-08-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.018 (78.2th percentile), scored 2026-09-28.

Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 78.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: +0.000

Affected products

Xymon
Debian Linux — versions 8.0

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

Public proof-of-concept exploits

grymer/CVE

References

github.com/svn2github/xymon/blob/master/branches/4.3.28/web/svcstatus.c (Third Party Advisory)
lists.debian.org/debian-lts-announce/2019/08/msg00032.html (Mailing List, Third Party Advisory)
lists.xymon.com/archive/2019-July/046570.html (Mailing List, Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2019-13486?: CVE-2019-13486 is a critical-severity vulnerability in Xymon, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2019-08-27.
How severe is CVE-2019-13486?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2019-13486 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.