CVE-2023-27934

Q: How do I fix CVE-2023-27934?

Upgrade macos to 13.3 or later.

Q: Is CVE-2023-27934 being actively exploited?

Not that we know of. CVE-2023-27934 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 1.8% is the estimated probability that it will be exploited in the next 30 days. That is higher than 76% of all scored CVEs.

Q: How severe is CVE-2023-27934?

CVE-2023-27934 has a CVSS v3 base score of 8.8, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2023-27934 affect?

Published advisories record a fix for macos (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

HIGHEPSS 76th pctl

8.8

CVSS v3

NVD

Description

A memory initialization issue was addressed. This issue is fixed in macOS Ventura 13.3, macOS Monterey 12.6.4. A remote attacker may be able to cause unexpected app termination or arbitrary code execution.

CWE-665 CWE-120Classic Buffer Overflow

How to fix

Remediation Available

macosNVD

Affected:< 13.3Fixed in:13.3CVE-2023-27934derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

1.79%probability of exploitation in 30 days

76thpercentile

Elevated risk: more likely to be exploited than 76% of all known CVEs.

References

Vendor Advisory1

support.apple.com

Other references2

Related Vulnerabilities

Other CWE-665 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2022-0847	High	7.8	89%	KEV	Fix
CVE-2022-22719	High	7.5	70%	-	Fix
CVE-2020-28019	High	7.5	62%	-	Fix
CVE-2022-46164	Critical	9.4	49%	-	Fix
CVE-2022-37128	Critical	9.8	21%	-	-
CVE-2019-14271	Critical	9.8	19%	-	Fix

Common questions

How do I fix CVE-2023-27934?

Upgrade macos to 13.3 or later.

Is CVE-2023-27934 being actively exploited?

Not that we know of. CVE-2023-27934 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 1.8% is the estimated probability that it will be exploited in the next 30 days. That is higher than 76% of all scored CVEs.

How severe is CVE-2023-27934?

CVE-2023-27934 has a CVSS v3 base score of 8.8, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2023-27934 affect?

Published advisories record a fix for macos (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2023-27934

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-04.