CVE-2019-11455

Name: CVE-2019-11455
Creator: NVD / NIST
Published: 2019-04-22T16:29:01.6+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 3.14%

Last modified Jun 17, 2026

CVE-2019-11455 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. A buffer over-read in Util_urlDecode in util.c in Tildeslash Monit before 5.25.3 allows a remote authenticated attacker to retrieve the contents of adjacent memory via manipulation of GET or POST parameters. The attacker can also cause a denial of service (application outage).. EPSS estimates a 3.14% chance of exploitation in the next 30 days.

Description

A buffer over-read in Util_urlDecode in util.c in Tildeslash Monit before 5.25.3 allows a remote authenticated attacker to retrieve the contents of adjacent memory via manipulation of GET or POST parameters. The attacker can also cause a denial of service (application outage).

Metrics

CVSS 3.1

8.1/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

EPSS Probability

3.14%

86.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-125

Affected Software

Vendor	Product	Versions
Tildeslash	Monit	< 5.25.3
Debian	Debian Linux	8.0
Fedoraproject	Fedora	31
Fedoraproject	Fedora	32
Canonical	Ubuntu Linux	18.10
Canonical	Ubuntu Linux	19.04

References

https://bitbucket.org/tildeslash/monit/commits/f12d0cdb42d4e74dffe1525d4062c815c48ac57aPatch, Third Party Advisory
https://github.com/dzflack/exploits/blob/master/macos/monit_dos.pyExploit, Third Party Advisory
https://github.com/dzflack/exploits/blob/master/unix/monit_buffer_overread.pyExploit, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/04/msg00028.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/12/msg00018.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HZQDHRSKTEX5MSYXNCGFTUSFGANBARHX/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L475QJMFFI2QV5QEHAKKPVX6QX6ECUL6/
https://usn.ubuntu.com/3971-1/Patch, Third Party Advisory
https://bitbucket.org/tildeslash/monit/commits/f12d0cdb42d4e74dffe1525d4062c815c48ac57aPatch, Third Party Advisory
https://github.com/dzflack/exploits/blob/master/macos/monit_dos.pyExploit, Third Party Advisory
https://github.com/dzflack/exploits/blob/master/unix/monit_buffer_overread.pyExploit, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/04/msg00028.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/12/msg00018.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HZQDHRSKTEX5MSYXNCGFTUSFGANBARHX/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L475QJMFFI2QV5QEHAKKPVX6QX6ECUL6/
https://usn.ubuntu.com/3971-1/Patch, Third Party Advisory

Timeline

Published: Apr 22, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-11455?

How severe is CVE-2019-11455?

CVE-2019-11455 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 3.14% probability of exploitation in the next 30 days.

How do I fix CVE-2019-11455?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-11455?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST