CVE-2021-23855

HIGHNVD 8.67.5▼

8.6

The user and password data base is exposed by an unprotected web server resource. Passwords are hashed with a weak hashing algorithm and therefore allow an attacker to determine the password by using rainbow tables.

CVSS v3: 8.6
EG Score: 7.5(medium)
EPSS: 35.2%
KEV: Not listed

Published

October 4, 2021

Last Modified

November 21, 2024

References (2)

psirt@boschhttps://psirt.bosch.com/security-advisories/bosch-sa-741752.html
af854a3a-2127-422b-91ae-364da2661108https://psirt.bosch.com/security-advisories/bosch-sa-741752.html

Weakness Classification(3)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 8× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:39 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 09:33 UTCEG score recompute
2026-05-26 09:33 UTCGHSA enrichment
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-24 16:49 UTCepss_batch

Frequently asked(5)

What is CVE-2021-23855?

CVE-2021-23855 is a high vulnerability published on October 4, 2021. The user and password data base is exposed by an unprotected web server resource. Passwords are hashed with a weak hashing algorithm and therefore allow an attacker to determine the password by using rainbow tables.

When was CVE-2021-23855 disclosed?

CVE-2021-23855 was first published in the National Vulnerability Database on October 4, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-23855 actively exploited?

CVE-2021-23855 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 35.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-23855?

CVE-2021-23855 has a CVSS v3 base score of 8.6 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 7.5.

How do I remediate CVE-2021-23855?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-23855, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-23855

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Is Your Infrastructure Affected by CVE-2021-23855?

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CVE-2021-23855

📅 Published

🔄 Last Modified

🔗 References (2)