CVE-2023-34923

Name: CVE-2023-34923
Creator: NVD / NIST
Published: 2023-06-22T19:15:08.987+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 0.74%

Last modified Jun 17, 2026

CVE-2023-34923 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. XML Signature Wrapping (XSW) in SAML-based Single Sign-on feature in TOPdesk v12.10.12 allows bad actors with credentials to authenticate with the Identity Provider (IP) to impersonate any TOPdesk user via SAML Response manipulation.. EPSS estimates a 0.74% chance of exploitation in the next 30 days.

Description

XML Signature Wrapping (XSW) in SAML-based Single Sign-on feature in TOPdesk v12.10.12 allows bad actors with credentials to authenticate with the Identity Provider (IP) to impersonate any TOPdesk user via SAML Response manipulation.

Metrics

CVSS 3.1

8.1/10

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

EPSS Probability

0.74%

49.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-863

Affected Software

Vendor	Product	Versions
Topdesk	Topdesk	12.10.12

References

https://char49.com/articles/topdesk-vulnerable-to-xml-signature-wrapping-attacksExploit, Technical Description, Third Party Advisory
https://my.topdesk.com/tas/public/ssp/content/detail/knowledgeitem?unid=56a16ba1c2824e9a82655892ba75d3c0Permissions Required
https://char49.com/articles/topdesk-vulnerable-to-xml-signature-wrapping-attacksExploit, Technical Description, Third Party Advisory
https://my.topdesk.com/tas/public/ssp/content/detail/knowledgeitem?unid=56a16ba1c2824e9a82655892ba75d3c0Permissions Required

Timeline

Published: Jun 22, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-34923?

How severe is CVE-2023-34923?

CVE-2023-34923 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 0.74% probability of exploitation in the next 30 days.

How do I fix CVE-2023-34923?

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-2023-34923?

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

Scan your code now

Source: NVD / NIST