What is the CVSS score of CVE-2020-7961?

CVE-2020-7961 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 99.8%.

Is there a public PoC exploit available for CVE-2020-7961?

Yes, a public proof-of-concept exploit is available for CVE-2020-7961. Prioritise patching immediately. EPSS: 99.8%.

Is there a patch available for CVE-2020-7961?

Yes, a patch is available for CVE-2020-7961. Update the affected software to the latest version immediately.

Liferay Portal CVE-2020-7961

CRITICAL

Deserialization of Untrusted Data (CWE-502)

2020-03-20 cve@mitre.org

Deserialization RCE Liferay Portal

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Added to CISA KEV

Jul 13, 2026 - 07:01 CISA

CVE Published

Mar 20, 2020 - 19:15 nvd

CRITICAL 9.8

Blast Radius

ecosystem impact

† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth

2 maven packages depend on com.liferay.portal:com.liferay.portal.kernel (2 direct, 0 indirect)

Ecosystem-wide dependent count for version 4.35.3.

DescriptionNVD

Deserialization of Untrusted Data in Liferay Portal prior to 7.2.1 CE GA2 allows remote attackers to execute arbitrary code via JSON web services (JSONWS).

AnalysisAI

Deserialization of Untrusted Data in Liferay Portal prior to 7.2.1 CE GA2 allows remote attackers to execute arbitrary code via JSON web services (JSONWS). Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Deserialization of Untrusted Data (CWE-502), which allows attackers to execute arbitrary code through malicious serialized objects. Deserialization of Untrusted Data in Liferay Portal prior to 7.2.1 CE GA2 allows remote attackers to execute arbitrary code via JSON web services (JSONWS). Affected products include: Liferay Liferay Portal. Version information: prior to 7.2.1.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Avoid deserializing untrusted data. Use safe serialization formats (JSON). Implement integrity checks and type allowlists.