Is CVE-2021-40113 in the CISA KEV catalog?

No. CVE-2021-40113 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-40113?

CVE-2021-40113 has a CVSS v3 base score of 10.0 (CRITICAL).

What is the EPSS score for CVE-2021-40113?

CVE-2021-40113 has an EPSS score of 4.63% (91th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-40113?

Upgrade catalyst pon switch cgp-ont-1p firmware to 1.1.1.14 or later. Fixes are available for 5 affected products.

CVE & CISA-KEV Catalog

CVE-2021-40113

CRITICALEPSS 91th pctl

10.0

CVSS v3

NVD

Description

Multiple vulnerabilities in the web-based management interface of the Cisco Catalyst Passive Optical Network (PON) Series Switches Optical Network Terminal (ONT) could allow an unauthenticated, remote attacker to perform the following actions: Log in with a default credential if the Telnet protocol is enabled Perform command injection Modify the configuration For more information about these vulnerabilities, see the Details section of this advisory.

CWE-284Improper Access Control CWE-78OS Command Injection

How to fix

Remediation Available

catalyst pon switch cgp-ont-1p firmwareNVD

Affected:< 1.1.1.14Fixed in:1.1.1.14CVE-2021-40113derived from NVD

catalyst pon switch cgp-ont-4p firmwareNVD

Affected:< 1.1.3.17Fixed in:1.1.3.17CVE-2021-40113derived from NVD

catalyst pon switch cgp-ont-4pv firmwareNVD

Affected:< 1.1.3.17Fixed in:1.1.3.17CVE-2021-40113derived from NVD

catalyst pon switch cgp-ont-4pvc firmwareNVD

Affected:< 1.1.3.17Fixed in:1.1.3.17CVE-2021-40113derived from NVD

catalyst pon switch cgp-ont-4tvcw firmwareNVD

Affected:< 1.1.3.17Fixed in:1.1.3.17CVE-2021-40113derived 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 RequiredNone

User InteractionNone

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

4.63%probability of exploitation in 30 days

91stpercentile

High risk: more likely to be exploited than 91% of all known CVEs.

References

Patch1

tools.cisco.com

Related Vulnerabilities

Other CWE-284 (Improper Access Control) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-27350	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2019-1653	High	7.5	100%	KEV	-
CVE-2023-23752	Medium	5.3	100%	KEV	Fix
CVE-2023-29298	High	7.5	100%	KEV	-
CVE-2023-38205	High	7.5	100%	KEV	-
CVE-2024-27348	Critical	9.8	99%	KEV	Fix

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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.