NSM vulnerable to XSS
Priority LOW 23CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
Cross Site Scripting (XSS) vulnerability in McAfee Network Security Manager (NSM) prior to 10.1 Minor 7 allows a remote authenticated administrator to embed a XSS in the administrator interface via specially crafted custom rules containing HTML. NSM did not correctly sanitize custom rule content in all scenarios.
Why it matters now
EPSS 0.00594 48th percentileScored 2026-11-07
Fix Fixed McAfee Network Security Manager (NSM) (McAfee,LLC): 10.7 M7
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA McAfee Network Security Manager (NSM) (McAfee,LLC) Fixed in 10.7 M7
Timeline
- 2026-10-02 Threatist record created from CVE-2021-4038
- 2026-10-03 Alias added: GHSA-jrmj-jm9w-qhxm
References
More McAfee Network Security Manager vulnerabilities
- TI-2017-03013 SB10192 - Network Security Management (NSM) - Infrastructure-based foot printing vulnerability CVSS 3.0CRITICAL 9.8
- TI-2019-02657 Authentication bypass in McAfee Network Security Manager 9.x CVSS 3.0CRITICAL 9.8
- TI-2017-03010 Session fixation in McAfee Network Security Management CVSS 3.0CRITICAL 9.1
- TI-2017-03005 McAfee Network Security Management (NSM) - Password recovery exploitation vulnerability CVSS 3.0CRITICAL 9.8
- TI-2017-03003 McAfee Network Security Management (NSM) - Exploitation of Authorization vulnerability CVSS 3.0HIGH 8.8
- TI-2017-03007 SB10192 - Network Security Management (NSM) - Cross-Site Request Forgery (CSRF) (aka Session Riding) vulnerability CVSS 3.0HIGH 8.8
Sources
- CVE-2021-4038 · CVE Program
- CVE-2021-4038 · NVD
- FIRST EPSS
- GHSA-jrmj-jm9w-qhxm · GitHub Advisory Database · CC BY 4.0
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