CVE-2026-12374

MEDIUMPre-NVD 6.46.4—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1%, top 100% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
6.4
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.4Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
6.4
EG Score
6.4(medium)
EPSS
0.0%
KEV
Not listed

Published

July 1, 2026

Last Modified

July 2, 2026

References (1)

Vendor Advisories for CVE-2026-12374(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 15× in last 7d / 15× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 11:40 UTCEG score recompute
  2. 2026-07-06 11:40 UTCGHSA enrichment
  3. 2026-07-05 12:46 UTCEG score recompute
  4. 2026-07-05 12:46 UTCGHSA enrichment
  5. 2026-07-04 13:51 UTCEG score recompute
  6. 2026-07-04 13:51 UTCGHSA enrichment
  7. 2026-07-03 14:57 UTCEG score recompute
  8. 2026-07-03 14:57 UTCGHSA enrichment
  9. 2026-07-02 16:02 UTCEG score recompute
  10. 2026-07-02 16:02 UTCGHSA enrichment
  11. 2026-07-01 17:08 UTCEG score recompute▲ 6.40
  12. 2026-07-01 17:08 UTCGHSA enrichment
  13. 2026-07-01 17:06 UTCNVD updateCVSS v3 → 6.4 · CVSS v4 → 6.4
  14. 2026-07-01 16:03 UTCEG score recompute
  15. 2026-07-01 16:03 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-12374?
CVE-2026-12374 is a medium vulnerability published on July 1, 2026. 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…
When was CVE-2026-12374 disclosed?
CVE-2026-12374 was first published in the National Vulnerability Database on July 1, 2026, with the most recent update on July 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-12374 actively exploited?
CVE-2026-12374 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-12374?
CVE-2026-12374 has a CVSS v3 base score of 6.4 (NVD).
How do I remediate CVE-2026-12374?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-12374, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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