CVE-2019-13455
In Xymon through 4.3.28, a stack-based buffer overflow vulnerability exists in the alert...
In Xymon through 4.3.28, a stack-based buffer overflow vulnerability exists in the alert acknowledgment CGI tool because of expansion in acknowledge.c.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
In Xymon through 4.3.28, a stack-based buffer overflow vulnerability exists in the alert acknowledgment CGI tool because of expansion in acknowledge.c.
- Record
CVE-2019-13455- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-787
- Updated
- 2026-11-02
CVE List No score
In Xymon through 4.3.28, a stack-based buffer overflow vulnerability exists in the alert acknowledgment CGI tool because of expansion in acknowledge.c.
- Record
CVE-2019-13455- Updated
- 2026-11-02
EUVDEUVD-2019-4928 No score
In Xymon through 4.3.28, a stack-based buffer overflow vulnerability exists in the alert acknowledgment CGI tool because of expansion in acknowledge.c.
- Record
EUVD-2019-4928- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-xx94-f2ch-qhxm No score
In Xymon through 4.3.28, a stack-based buffer overflow vulnerability exists in the alert...
In Xymon through 4.3.28, a stack-based buffer overflow vulnerability exists in the alert acknowledgment CGI tool because of expansion in acknowledge.c.
- Record
GHSA-xx94-f2ch-qhxm- Updated
- 2026-11-02
OSV
In Xymon through 4.3.28, a stack-based buffer overflow vulnerability exists in the alert acknowledgment CGI tool because of expansion in acknowledge.c.
- Record
CVE-2019-13455- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2019-13455
In Xymon through 4.3.28, a stack-based buffer overflow vulnerability exists in the alert acknowledgment CGI tool because of expansion in acknowledge.c.
- Record
DEBIAN-CVE-2019-13455- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2019-13455
In Xymon through 4.3.28, a stack-based buffer overflow vulnerability exists in the alert acknowledgment CGI tool because of expansion in acknowledge.c.
- Record
UBUNTU-CVE-2019-13455- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
xymonDebian:12 |
before 4.3.29-1 | 4.3.29-1 |
xymonDebian:13 |
before 4.3.29-1 | 4.3.29-1 |
xymonDebian:14 |
before 4.3.29-1 | 4.3.29-1 |
xymonDebian:8 |
before 4.3.17-6+deb8u2, plus listed versions 4.3.17-64.3.17-6+deb8u1 |
4.3.17-6+deb8u2 |
xymonUbuntu:16.04:LTS |
All versions, plus listed versions 4.3.21-14.3.21-24.3.22~beta-14.3.24-14.3.24-24.3.25-1 |
None known |
xymonUbuntu:18.04:LTS |
All versions, plus listed versions 4.3.28-24.3.28-34.3.28-3build1 |
None known |
xymonUbuntu:20.04:LTS |
before 4.3.29-1 | 4.3.29-1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2019-13455 is a critical vulnerability (CVSS 9.8) in Xymon, published August 26, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.99%, the 80th percentile. Fixed in xymon 4.3.29-1.
References
github.com/svn2github/xymon/blob/master/branches/4.3.28/web/acknowledge.c
lists.debian.org/debian-lts-announce/2019/08/msg00032.html
lists.xymon.com/archive/2019-July/046570.html
nvd.nist.gov/vuln/detail/CVE-2019-13455
security-tracker.debian.org/tracker/CVE-2019-13455
ubuntu.com/security/CVE-2019-13455
cve.org/CVERecord?id=CVE-2019-13455