CVE-2021-40857

HIGHNVD 8.88.8—

8.8

Auerswald COMpact 5500R devices before 8.2B allow Privilege Escalation via the passwd=1 substring.

CVSS v3: 8.8
EG Score: 8.8(medium)
EPSS: 80.7%
KEV: Not listed

Published

December 13, 2021

Last Modified

November 21, 2024

References (6)

cve@mitrehttp://packetstormsecurity.com/files/165163/Auerswald-COMpact-8.0B-Privilege-Escalation.html
cve@mitrehttps://www.redteam-pentesting.de/advisories/rt-sa-2021-005
cve@mitrehttps://www.redteam-pentesting.de/en/advisories/-advisories-publicised-vulnerability-analyses
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/165163/Auerswald-COMpact-8.0B-Privilege-Escalation.html
af854a3a-2127-422b-91ae-364da2661108https://www.redteam-pentesting.de/advisories/rt-sa-2021-005
af854a3a-2127-422b-91ae-364da2661108https://www.redteam-pentesting.de/en/advisories/-advisories-publicised-vulnerability-analyses

Weakness Classification(1)

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

CWE-522Insufficiently Protected Credentials

Data Freshness Timeline

(refreshed 11× in last 7d / 20× 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.

2026-06-04 13:10 UTCepss_batch
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Frequently asked(5)

What is CVE-2021-40857?

CVE-2021-40857 is a high vulnerability published on December 13, 2021. Auerswald COMpact 5500R devices before 8.2B allow Privilege Escalation via the passwd=1 substring.

When was CVE-2021-40857 disclosed?

CVE-2021-40857 was first published in the National Vulnerability Database on December 13, 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-2021-40857 actively exploited?

CVE-2021-40857 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 80.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-40857?

CVE-2021-40857 has a CVSS v3 base score of 8.8 (NVD).

How do I remediate CVE-2021-40857?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-40857, 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

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CVE-2021-40857

📅 Published

🔄 Last Modified

🔗 References (6)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-40857?

🔗 Related CVEs(same CWE)

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Published

Last Modified

References (6)

Frequently asked(5)

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