Critical severity · published Aug 27, 2019
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
9.8
CVSS
2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.0% · higher than 81% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
8.0 · source: NVD
XY
Xymon · Xymon
through 4.3.28 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-13455
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-13455
Third Party Advisory
https://github.com/svn2github/xymon/blob/master/branches/4.3.28/web/acknowledge.c
Mailing List
https://lists.debian.org/debian-lts-announce/2019/08/msg00032.html
Exploit
https://lists.xymon.com/archive/2019-July/046570.html
More from Debian Linux
10.0
CVE-2025-32433
Erlang/OTP SSH Vulnerable to Pre-Authentication RCE
10.0
CVE-2025-24201
Apple Multiple Products WebKit Out-of-Bounds Write Vulnerability
10.0
CVE-2021-44228
Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints
10.0
CVE-2015-3306
ProFTPD Improper Access Control Vulnerability
9.8
CVE-2026-24061
GNU InetUtils Argument Injection Vulnerability
