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TI-2023-09755 Aliases CVE-2023-23958GHSA-f2mp-6hqr-p3mr

Symantec Protection Engine Hash Leak Vulnerability

Priority LOW 31CWE-200Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-200.

Summary

Symantec Protection Engine, prior to 9.1.0, may be susceptible to a Hash Leak vulnerability.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0063 50th percentileScored 2026-11-07
Fix Fixed Symantec Protection Engine (Symantec): 9.1.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
SymantecSymantec Protection Engine—9.1.0Patch availableCNA
  • Symantec Protection Engine VendorSymantec Affected — Fixed in 9.1.0 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:symantec:protection_engine:*:*:*:*:*:*:*:*before 9.1.0VulnerableSymantec
  • cpe:2.3:a:symantec:protection_engine:*:*:*:*:*:*:*:* Versions before 9.1.0 Vulnerable ·Symantec

Remediation

  • Fix · CNA Symantec Protection Engine (Symantec) Fixed in 9.1.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-23958
  2. 2026-10-03 Alias added: GHSA-f2mp-6hqr-p3mr
  3. 2026-10-27 EPSS moved to the 50th–90th percentile

References

Advisory 1

  • TI-2016-02020 The AntiVirus Decomposer engine in Symantec Advanced Threat Protection (ATP); Symantec… CVSS 3.0HIGH 7.8
  • TI-2016-03091 Integer overflow in the TNEF unpacker in the AntiVirus Decomposer engine in Symantec… CVSS 3.0CRITICAL 9.8
  • TI-2016-03092 The AntiVirus Decomposer engine in Symantec Advanced Threat Protection (ATP); Symantec… CVSS 3.0HIGH 8.4
  • TI-2016-03090 The AntiVirus Decomposer engine in Symantec Advanced Threat Protection (ATP); Symantec… CVSS 3.0HIGH 8.4
  • TI-2016-02016 The AntiVirus Decomposer engine in Symantec Advanced Threat Protection (ATP); Symantec… CVSS 3.0HIGH 8.4
  • TI-2016-02018 Buffer overflow in Dec2SS.dll in the AntiVirus Decomposer engine in Symantec Advanced… CVSS 3.0HIGH 7.3
See all 9 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences