What is CVE-2023-44077?

CVE-2023-44077 is a critical-severity vulnerability in Apple macOS, classified under Improper Verification of Cryptographic Signature. CVSS score: 9.8/10. Published 2024-01-17.

How severe is CVE-2023-44077?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Apple macOS

CVE-2023-44077

Studio Network Solutions ShareBrowser before 7.0 on macOS mishandles signature verification, aka PMP-2636.

Published 2024-01-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (29.9th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 29.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-347 — Improper Verification of Cryptographic Signature

References

Frequently asked questions

What is CVE-2023-44077?: CVE-2023-44077 is a critical-severity vulnerability in Apple macOS, classified under Improper Verification of Cryptographic Signature. CVSS score: 9.8/10. Published 2024-01-17.
How severe is CVE-2023-44077?: Critical severity. CVSS v3 base score is 9.8 out of 10.