What is CVE-2023-23958?

CVE-2023-23958 is a medium-severity vulnerability in Symantec Protection Engine, classified under Information Disclosure. CVSS score: 6.8/10. Published 2023-09-27.

How severe is CVE-2023-23958?

Medium severity. CVSS v3 base score is 6.8 out of 10.

Information disclosure in Symantec Protection Engine

CVE-2023-23958

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

Vulnerability class: Information Disclosure

Published 2023-09-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.006 (48.1th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 48.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.006 · change: +0.001

Affected products

Symantec Protection Engine
Symantec Protection Engine — versions 9.1.0

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

support.broadcom.com/external/content/SecurityAdvisories/0/22599 (Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2023-23958?: CVE-2023-23958 is a medium-severity vulnerability in Symantec Protection Engine, classified under Information Disclosure. CVSS score: 6.8/10. Published 2023-09-27.
How severe is CVE-2023-23958?: Medium severity. CVSS v3 base score is 6.8 out of 10.