CVE-2023-23958: Symantec Protection Engine, prior to 9.1.0, may be susceptible to a Hash Leak vulnerability.

Q: How do I fix CVE-2023-23958?

protection engine: upgrade to 9.1.0. Exact commands for each OS are on this page.

Q: Is CVE-2023-23958 being exploited?

CVE-2023-23958 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-23958 affect?

CVE-2023-23958 affects protection engine. Severity is medium (CVSS 6.8). Symantec Protection Engine, prior to 9.1.0, may be susceptible to a Hash Leak vulnerability.

Q: How urgent is CVE-2023-23958?

Priority 36/100. No elevated risk signals yet.

Routine

MEDIUM 6.8UPGRADE

CVE-2023-23958 is a medium-severity flaw (CVSS 6.8) affecting protection engine. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.8 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.6% (top 50%)
CISA exploited list	No
Weakness	CWE-200
Published	2023-09-27
Last modified	2026-06-17

Publisher (CNA): Symantec Corporation · Vendor: symantec

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-09-27 15:18 UTCPublished CVE record published
2026-06-17 05:38 UTCUpdated Record last modified

symantec protection engine UPGRADE

Affected: < 9.1.0

Fixed in: 9.1.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy protection-engine || rpm -q protection-engine || protection-engine --version

2. UPGRADE to 9.1.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade protection-engine

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade protection-engine

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-23958?

protection engine: upgrade to 9.1.0. Exact commands for each OS are on this page.

Is CVE-2023-23958 being exploited?

CVE-2023-23958 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-23958 affect?

CVE-2023-23958 affects protection engine. Severity is medium (CVSS 6.8). Symantec Protection Engine, prior to 9.1.0, may be susceptible to a Hash Leak vulnerability.

How urgent is CVE-2023-23958?

Priority 36/100. No elevated risk signals yet.

Software pages

Symantec and Broadcom vulnerabilities

References

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