How severe is CVE-2020-3140?

CVE-2020-3140 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-3140 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-3140?

CVE-2020-3140 affects Cisco Prime License Manager. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-3140?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2020-3140 published?

CVE-2020-3140 was published on 2020-07-16 and last updated on 2026-06-17.

CVE-2020-3140

CVE-2020-3140 is a critical-severity vulnerability in Cisco Prime License Manager with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-863.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 3% (86th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-863
Affected product: Cisco Prime License Manager
Published: 2020-07-16
Last modified: 2026-06-17

Description

A vulnerability in the web management interface of Cisco Prime License Manager (PLM) Software could allow an unauthenticated, remote attacker to gain unauthorized access to an affected device. The vulnerability is due to insufficient validation of user input on the web management interface. An attacker could exploit this vulnerability by submitting a malicious request to an affected system. An exploit could allow the attacker to gain administrative-level privileges on the system. The attacker needs a valid username to exploit this vulnerability.

Frequently asked questions

What is CVE-2020-3140?: A vulnerability in the web management interface of Cisco Prime License Manager (PLM) Software could allow an unauthenticated, remote attacker to gain unauthorized access to an affected device. The vulnerability is due to insufficient validation of user input on the web management interface. An attacker could exploit this vulnerability by submitting a malicious request to an affected system. An exploit could allow the attacker to gain administrative-level privileges on the system. The attacker needs a valid username to exploit this vulnerability.
How severe is CVE-2020-3140?: CVE-2020-3140 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-3140 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-3140?: CVE-2020-3140 affects Cisco Prime License Manager. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-3140?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-3140 published?: CVE-2020-3140 was published on 2020-07-16 and last updated on 2026-06-17.

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cisco-prime-priv-esc-HyhwdzBA

Affected products (1)

cpe:2.3:a:cisco:prime_license_manager:*:*:*:*:*:*:*:*

More vulnerabilities in Cisco Prime License Manager

CVE-2017-12337 — Critical (CVSS 9.8): A vulnerability in the upgrade mechanism of Cisco collaboration products based on the Cisco Voice Operating System…
CVE-2018-15441 — Critical (CVSS 9.4): A vulnerability in the web framework code of Cisco Prime License Manager (PLM) could allow an unauthenticated, remote…
CVE-2021-1362 — High (CVSS 8.8): A vulnerability in the SOAP API endpoint of Cisco Unified Communications Manager, Cisco Unified Communications Manager…
CVE-2017-6779 — High (CVSS 7.5): Multiple Cisco products are affected by a vulnerability in local file management for certain system log files of Cisco…
CVE-2021-1226 — Medium (CVSS 4.3): A vulnerability in the audit logging component of Cisco Unified Communications Manager, Cisco Unified Communications…

All CVEs affecting Cisco Prime License Manager →

Other CWE-863 (Incorrect Authorization) vulnerabilities

CVE-2026-48286 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) versions 7.4.3 build 9396 and earlier are affected by an Incorrect Authorization…
CVE-2026-48303 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) versions 7.4.3 build 9394 and earlier are affected by an Incorrect Authorization…
CVE-2026-44330 — Critical (CVSS 10.0): free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF mounts the…
CVE-2026-46595 — Critical (CVSS 10.0): Previously, CVE-2024-45337 fixed an authorization bypass for misused ssh server configurations; if any other type of…
CVE-2026-33105 — Critical (CVSS 10.0): Improper authorization in Microsoft Azure Kubernetes Service allows an unauthorized attacker to elevate privileges over…
CVE-2026-32213 — Critical (CVSS 10.0): Improper authorization in Azure AI Foundry allows an unauthorized attacker to elevate privileges over a network.

Browse all CWE-863 (Incorrect Authorization) vulnerabilities →