What is CVE-2023-27574?

CVE-2023-27574 is a critical-severity vulnerability in Shadowsocks Shadowsocksx-Ng, classified under Download of Code Without Integrity Check. CVSS score: 9.8/10. Published 2023-03-03.

How severe is CVE-2023-27574?

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

Is CVE-2023-27574 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Shadowsocks Shadowsocksx-Ng

CVE-2023-27574

ShadowsocksX-NG 1.10.0 signs with com.apple.security.get-task-allow entitlements because of CODE_SIGNING_INJECT_BASE_ENTITLEMENTS.

Published 2023-03-03 · 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 (30.1th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 30.1% 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

Shadowsocks Shadowsocksx-Ng — versions 1.10.0

Weakness classification (CWE)

CWE-494 — Download of Code Without Integrity Check

Public proof-of-concept exploits

NSEcho/vos

References

shadowsocks.org (Product)
github.com/shadowsocks/ShadowsocksX-NG/pull/1456 (Patch)

Frequently asked questions

What is CVE-2023-27574?: CVE-2023-27574 is a critical-severity vulnerability in Shadowsocks Shadowsocksx-Ng, classified under Download of Code Without Integrity Check. CVSS score: 9.8/10. Published 2023-03-03.
How severe is CVE-2023-27574?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2023-27574 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.