No exploitation reported

CVE-2021-41553

No exploitation reported by the sources we read.

Published2021-10-05
WeaknessCWE-384

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

In ARCHIBUS Web Central 21.3.3.815 (a version from 2014), the Web Application in /archibus/login.axvw assign a session token that could be already in use by another user. It was therefore possible to access the application through a user whose credentials were not known, without any attempt by the testers to modify the application logic. It is also possible to set the value of the session token, client-side, simply by making an unauthenticated GET Request to the Home Page and adding an arbitrary value to the JSESSIONID field. The application, following the login, does not assign a new token, continuing to keep the inserted one, as the identifier of the entire session. This is fixed in all recent versions, such as version 26. NOTE: This vulnerability only affects products that are no longer supported by the maintainer. Version 21.3 was officially de-supported by the end of 2020

Timeline

dates in UTC

2021-10-0516:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-41553?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-41553?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Archibus web central

Branch	Affected	Fixed in	Source
21.3	= 21.3.3.815	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.19.8read 2026-10-23
NVDCVSS 2.07.5read 2026-10-23
NVDweakness (CWE)CWE-384read 2026-10-23
FIRST EPSSEPSS score1.2 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2021-10-05
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2021-41553?

Is CVE-2021-41553 actively exploited?

Active exploitation of CVE-2021-41553 has not been confirmed. Its EPSS score was 1.2% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-41553?

CVE-2021-41553 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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