CVE-2018-16530

CRITICAL

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 Remot...

Affects 1 product across 1 vendor.

CVSS 3.19.8
EPSS3.4%
Percentile89th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity, no authentication required, no user interaction needed, impact contained to the vulnerable component, full confidentiality impact, full integrity impact, full availability impact.
CWE Weakness Definitions
CWE-787: Out-of-Bounds Write

Software writes data past buffer boundaries, corrupting memory and potentially enabling code execution.

◆ AI Analysis — automated analysis, not human-reviewed

This vulnerability was disclosed in 2019. A critical vulnerability affects Forcepoint systems (CVE-2018-16530). No public exploit code is currently available. Isolate affected systems if patching is not feasible.

BSID: BS-2019-GLOBAL-126451-C • Model: rule-based-v1 • Confidence: MEDIUM

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Frequently Asked Questions
What is CVE-2018-16530?
This vulnerability was disclosed in 2019. A critical vulnerability affects Forcepoint systems (CVE-2018-16530). No public exploit code is currently available. Isolate affected systems if patching is not feasible.
What is the CVSS score for CVE-2018-16530?
CVE-2018-16530 has CVSS 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS: 3.4%.
Is CVE-2018-16530 actively exploited?
No confirmed active exploitation of CVE-2018-16530 as of 2026-09-25.
How do I remediate CVE-2018-16530?
Priority: MEDIUM. Advisory: https://help.forcepoint.com/security/CVE/CVE-2018-16530.html PSIRT: [email protected]
What systems are affected by CVE-2018-16530?
CVE-2018-16530 affects Forcepoint Email Security.
Vulnerability Details
CVE IDCVE-2018-16530
BSIDBS-2019-GLOBAL-126451-C BreachSpider Global ID
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published2019-04-09
Last Modified2026-06-17
ICS Relevance15%
Weakness (CWE)
Out-of-Bounds Write
SourceNVD
Official Description

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.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

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

Exploitation Likelihood: LOW

Affected Products
VendorProductAffected Versions
Forcepoint Email Security 8.5.0 8.5.3
Remediation
View Vendor Advisory →

Remediation Priority: MEDIUM

Vendor PSIRT: [email protected]
Threat Intelligence
● Threat Intelligence Validated: October 2026 | Threat Age: 2746 Days
CISA known-exploitedNot in KEV catalog
Public ExploitNot confirmed
PoC CodeNot confirmed
AI Enrichment Record — provenance & audit hash
Modelrule-based-v1
ConfidenceMEDIUM
Enriched At2026-05-24
SHA-512 Audit Hash281d041fe8f68bbfd5eab8de22aac7dfd98a5e8441364f54bfa122f67ee49e5ad5bc84d9dbaaeb618d7630c0dfcbe4137a8b3c63411f636f08f45f64f661a4f6
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