What is the CVSS score of CVE-2026-21791?

CVE-2026-21791 has a CVSS 3.1 base score of 3.3 (Low). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N. EPSS exploitation probability: 0.0%.

How to fix or mitigate CVE-2026-21791?

During next maintenance window: Apply vendor patches when convenient. Verify log exposure controls are in place.

Sametime CVE-2026-21791

LOW

Insertion of Sensitive Information into Log File (CWE-532)

2026-03-10 psirt@hcl.com

Information Disclosure Google Sametime Hcltech

3.3

CVSS 3.1 · NVD

View

Vulnerability Assessment

Weakness	CWE CWE-532 OWASP Top 10:2025 A09:2021 - Security Logging and Monitoring Failures ASVS 5.0 V7 - Error Handling and Logging Log coverage, monitoring, alerting
Impact	CVSS 3.3 (LOW). Attack vector: Local. Complexity: Low. Privileges required: Low. User interaction: None.
Exploit ScenarioDerived	An attacker could exploit this vulnerability to compromise the affected system.

Monitor Track and reassess. Why: LOW severity (CVSS 0.1-3.9).

No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

HCL Sametime for Android is impacted by a sensitive information disclosure. Hostnames information is written in application logs and certain URL [CVSS 3.3 LOW]

RemediationAI

Monitor vendor advisories for a patch.

Affects your stack

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Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Classified as CWE-532 (Insertion of Sensitive Information into Log File). HCL Sametime for Android is impacted by a sensitive information disclosure. Hostnames information is written in application logs and certain URL

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 3.3 LOW

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

DescriptionCVE.org

HCL Sametime for Android is impacted by a sensitive information disclosure. Hostnames information is written in application logs and certain URL

Executive ViewAI

Why It Matters

CVE-2026-21791 is a low-severity vulnerability in HCL Sametime for Android involving log exposure (CVSS 3.3). The limited severity suggests constrained impact, typically requiring specific conditions or local access for exploitation. Apply vendor updates when available as part of routine maintenance.

Business Impact: Low

Compensating Controls

Apply vendor patch during routine maintenance. Standard log exposure mitigations apply if patching is delayed.

Threat Intelligence Overview

EPSS Score

0.0%

Top 98% exploitable

Data Quality

4 sources

Confidence: Medium

NVD

CVE.org

EPSS

VulDB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity LOW

CISA KEV No

Public POC No

EPSS 0.0%

Patch available No

Active threat No

Deciding rule

LOW severity (CVSS 0.1-3.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Defer

Exploitation· derived

None

System Exposure· derived

Small

Automatable· derived

Human Impact

Low

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +16

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.