Is CVE-2021-33903 in the CISA KEV catalog?

No. CVE-2021-33903 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-33903?

CVE-2021-33903 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2021-33903?

CVE-2021-33903 has an EPSS score of 1.07% (61th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-33903?

Upgrade lcos to 10.42.0473 or later.

CVE & CISA-KEV Catalog

CVE-2021-33903

HIGH

8.8

CVSS v3

NVD

Description

In LCOS 10.40 to 10.42.0473-RU3 with SNMPv3 enabled on LANCOM devices, changing the password of the root user via the CLI does not change the password of the root user for SNMPv3 access. (However, changing the password of the root user via LANconfig does change the password of the root user for SNMPv3 access.)

How to fix

Remediation Available

lcosNVD

Affected:>= 10.40, < 10.42.0473Fixed in:10.42.0473CVE-2021-33903derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

1.07%probability of exploitation in 30 days

61stpercentile

Moderate risk: more likely to be exploited than 61% of all known CVEs.

References

Third-Party Advisory1

nmedv.de

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.