CVE-2026-12374PoC

LOWCVSS 6.4 · MEDIUM

Exploit discussion active in current signal (1 latest mentions)

Immediate actions

Hunt for exploitation attempts and persistence artifacts
Increase monitoring for publicly documented tradecraft
Track advisory updates for patch or workaround availability

Recommended action window: High priority (within 72h)

NVD description

Improper certificate validation and a time-of-check time-of-use (TOCTOU) race condition in the PrivilegedHelperTool XPC service in Cato Client before v.5.13.1 on macOS allows a local authenticated attacker to escalate privileges to root via a self-signed certificate that bypasses the XPC caller verification and a symlink swap during package installation.

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1.5/ 10 priority

Sources & remediation

Other references

https://support.catonetworks.com/hc/en-us/articles/37284626576413-Security-Vulnerability-CVE-2026-12374-that-Impacts-macOS-Client-Versions-Lower-than-5-13-1

Weakness type (CWE)

CWE-295CWE-367

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

NONE

Threat summary

Public PoC is present in monitored signal
1 mentions across 1 observed day

What's happening

PoC mentioned or linked in 1 signal
Technical details provided in 1 signal
1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d

Signal classification1 categories

PoC

1100.0%

Referenced assets1 URL

By indicator

https://somelab.ai/cato-securestore-xpc-lpe

Full discourse1 post

Dhiraj@RandomDhiraj93d
PoC
Here is my write-up on (CVE-2026-12374) LPE in Cato Networks client for macOS via XPC auth bypass + TOCTOU. https://somelab.ai/cato-securestore-xpc-lpe #infosec #AI
Post summary
A write-up link is shared describing an LPE vulnerability in the Cato Networks client on macOS using an XPC auth bypass and TOCTOU race condition. No active exploitation or patch details are provided.
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