Vulnerability · Published Oct 13, 2026 · Assigned by mitre

CVE-2026-52394

Critical 9.1

In plain English

A critical-severity security flaw in the affected software. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities).

Severity (CVSS 3.1)9.1Critical

Exploit odds (30 days)0.4%top 65.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

DeepSeek V4 is vulnerable to Incorrect Access Control via a crafted input.

Affected products (as reported)

Vendor	Product	Versions
n/a	n/a	n/a

Weakness: CWE-201, CWE-209 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References

http://deepseek.com
https://gist.github.com/CAPTAIN1275/48a0b7d67d0e58cb05c607e0d715447c