CVE-2021-45887

Name: CVE-2021-45887
Creator: NVD / NIST
Published: 2022-03-13T02:15:07.167+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 3.25%

Last modified Jun 17, 2026

CVE-2021-45887 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. An issue was discovered in PONTON X/P Messenger before 3.11.2. Due to path traversal in private/SchemaSetUpload.do for uploaded ZIP files, an executable script can be uploaded by web application administrators, giving the attacker remote code execution on the underlying server via an imgs/*.jsp URI.. EPSS estimates a 3.25% chance of exploitation in the next 30 days.

Description

An issue was discovered in PONTON X/P Messenger before 3.11.2. Due to path traversal in private/SchemaSetUpload.do for uploaded ZIP files, an executable script can be uploaded by web application administrators, giving the attacker remote code execution on the underlying server via an imgs/*.jsp URI.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

3.25%

86.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-22

Affected Software

Vendor	Product	Versions
Ponton	X\/P Messenger	3.8.0
Ponton	X\/P Messenger	3.10.0

References

https://www.ponton.de/products/xpmessenger/Product, Vendor Advisory
https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2021-077.txtExploit, Third Party Advisory
https://www.ponton.de/products/xpmessenger/Product, Vendor Advisory
https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2021-077.txtExploit, Third Party Advisory

Timeline

Published: Mar 13, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-45887?

How severe is CVE-2021-45887?

CVE-2021-45887 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 3.25% probability of exploitation in the next 30 days.

How do I fix CVE-2021-45887?

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-2021-45887?

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

Scan your code now

Source: NVD / NIST