Is CVE-2021-4242 in the CISA KEV catalog?

No. CVE-2021-4242 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-4242?

CVE-2021-4242 has a CVSS v3 base score of 6.3 (MEDIUM).

What is the EPSS score for CVE-2021-4242?

CVE-2021-4242 has an EPSS score of 3.02% (86th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2021-4242?

No published fix for CVE-2021-4242 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2021-4242

MEDIUMEPSS 86th pctl

6.3

CVSS v3

NVD

Description

A vulnerability was found in Sapido BR270n, BRC76n, GR297 and RB1732 and classified as critical. Affected by this issue is some unknown functionality of the file ip/syscmd.htm. The manipulation leads to os command injection. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-214592.

CWE-707 CWE-78OS Command Injection

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityLow

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

Exploit Intelligence

3.02%probability of exploitation in 30 days

86thpercentile

Elevated risk: more likely to be exploited than 86% of all known CVEs.

References

Exploit2

Third-Party Advisory1

vuldb.com

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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.