No exploitation reported

CVE-2021-23858

No exploitation reported by the sources we read.

Published2021-10-04
WeaknessCWE-200 · CWE-306

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

Information disclosure: The main configuration, including users and their hashed passwords, is exposed by an unprotected web server resource and can be accessed without authentication. Additionally, device details are exposed which include the serial number and the firmware version by another unprotected web server resource.

Timeline

dates in UTC

2021-10-0418:15CVE 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-2021-23858?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-23858?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Bosch indracontrol xlc firmwareversion to verify

Branch	Affected	Fixed in	Source
12.x	≤ 12	no fix published	NVD

Bosch rexroth indramotion mlc l20 firmwareversion to verify

Branch	Affected	Fixed in	Source
12.x	≤ 12	no fix published	NVD

Bosch rexroth indramotion mlc l25 firmwareversion to verify

Branch	Affected	Fixed in	Source
12.x	≤ 12	no fix published	NVD

9 more products in the sources.

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

Fix

Advisories and patches

psirt.bosch.comVendor Advisory

Detection

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

Sources

CNACVSS 3.18.6read 2026-10-23
NVDCVSS 3.17.5read 2026-10-23
NVDCVSS 2.07.8read 2026-10-23
CNAweakness (CWE)CWE-200read 2026-10-23
NVDweakness (CWE)CWE-306read 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:N/A:N
Published: 2021-10-04
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2021-23858?

Is CVE-2021-23858 actively exploited?

Active exploitation of CVE-2021-23858 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-2021-23858?

CVE-2021-23858 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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