Out-of-bounds write in Forcepoint Email Security
Priority MEDIUM 48CWE-787Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.
Summary
A stack-based buffer overflow in Forcepoint Email Security version 8.5 allows an attacker to craft malicious input and potentially crash a process creating a denial-of-service. While no known Remote Code Execution (RCE) vulnerabilities exist, as with all buffer overflows, the possibility of RCE cannot be completely ruled out. Data Execution Protection (DEP) is already enabled on the Email appliance as a risk mitigation.
Why it matters now
EPSS 0.03444 89th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Forcepoint | Forcepoint Email Security | 8.5 | — | No fix listed | CNA |
- Forcepoint Email Security VendorForcepoint Affected 8.5 Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:forcepoint:email_security:8.5.0:*:*:*:*:*:*:* | 8.5.0 | Vulnerable | Forcepoint |
| cpe:2.3:a:forcepoint:email_security:8.5.3:*:*:*:*:*:*:* | 8.5.3 | Vulnerable | Forcepoint |
- cpe:2.3:a:forcepoint:email_security:8.5.0:*:*:*:*:*:*:* Versions 8.5.0 Vulnerable ·Forcepoint
- cpe:2.3:a:forcepoint:email_security:8.5.3:*:*:*:*:*:*:* Versions 8.5.3 Vulnerable ·Forcepoint
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2018-16530
- 2026-10-03 Alias added: GHSA-m6q8-fqhp-5fpf
References
More Forcepoint Email Security vulnerabilities
- TI-2019-04349 Improper access control in Forcepoint Email Security CVSS 3.1CRITICAL 9.8
- TI-2018-11859 Weak password recovery in Forcepoint Email Security CVSS 3.1CRITICAL 9.8
- TI-2022-01566 XML external entity injection in Forcepoint Data Loss Prevention CVSS 3.1CRITICAL 9.8
- TI-2023-01956 SQL injection in Forcepoint Cloud Security Gateway CVSS 3.1CRITICAL 9.8
- TI-2024-02012 Cross-site scripting in Forcepoint Email Security CVSS 3.1HIGH 8.8
- TI-2020-05435 XML external entity injection in Forcepoint Web Security Content Gateway CVSS 3.1HIGH 7.5
Sources
- CVE-2018-16530 · CVE Program
- CVE-2018-16530 · NVD
- FIRST EPSS
- GHSA-m6q8-fqhp-5fpf · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences