What is the CVSS score of CVE-2023-31488?

CVE-2023-31488 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: 0.9%.

Which versions of Ironport Email Security Appliance are affected by CVE-2023-31488?

CVE-2023-31488 presents critical security risk, a out-of-bounds write vulnerability rated CVSS 9.8.

How to fix or mitigate CVE-2023-31488?

Within 7 days: Identify all affected systems and apply vendor patches promptly. If patching is delayed, consider network segmentation to limit exposure.

Ironport Email Security Appliance CVE-2023-31488

CRITICAL

Out-of-bounds Write (CWE-787)

2024-01-10 cve@mitre.org

Buffer Overflow Cisco RCE Memory Corruption Ironport Email Security Appliance Secure Email Gateway Firmware

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

Analysis Generated

Mar 28, 2026 - 19:34 vuln.today

CVE Published

Jan 10, 2024 - 20:15 nvd

CRITICAL 9.8

DescriptionCVE.org

Hyland Perceptive Filters releases before 2023-12-08 (e.g., 11.4.0.2647), as used in Cisco IronPort Email Security Appliance Software, Cisco Secure Email Gateway, and various non-Cisco products, allow attackers to trigger a segmentation fault and execute arbitrary code via a crafted document.

AnalysisAI

Hyland Perceptive Filters releases before 2023-12-08 (e.g., 11.4.0.2647), as used in Cisco IronPort Email Security Appliance Software, Cisco Secure Email Gateway, and various non-Cisco products,. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Out-of-bounds Write (CWE-787), which allows attackers to write data beyond allocated buffer boundaries leading to code execution or crashes. Hyland Perceptive Filters releases before 2023-12-08 (e.g., 11.4.0.2647), as used in Cisco IronPort Email Security Appliance Software, Cisco Secure Email Gateway, and various non-Cisco products, allow attackers to trigger a segmentation fault and execute arbitrary code via a crafted document. Affected products include: Cisco Ironport Email Security Appliance, Cisco Secure Email Gateway Firmware. Version information: before 2023.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate write boundaries, use memory-safe languages, enable compiler protections (ASLR, stack canaries).