CVE & CISA-KEV Catalog

CVE-2021-34795

CRITICALEPSS 75th 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 ControlCWE-1188

How to fix

Remediation Available
catalyst pon switch cgp-ont-1p firmwareNVD
Affected:< 1.1.1.14Fixed in:1.1.1.14CVE-2021-34795derived from NVD
catalyst pon switch cgp-ont-4p firmwareNVD
Affected:< 1.1.3.17Fixed in:1.1.3.17CVE-2021-34795derived from NVD
catalyst pon switch cgp-ont-4pv firmwareNVD
Affected:< 1.1.3.17Fixed in:1.1.3.17CVE-2021-34795derived from NVD
catalyst pon switch cgp-ont-4pvc firmwareNVD
Affected:< 1.1.3.17Fixed in:1.1.3.17CVE-2021-34795derived from NVD
catalyst pon switch cgp-ont-4tvcw firmwareNVD
Affected:< 1.1.3.17Fixed in:1.1.3.17CVE-2021-34795derived 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

1.75%probability of exploitation in 30 days
75thpercentile

Elevated risk: more likely to be exploited than 75% of all known CVEs.

References

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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.