What is CVE-2025-70034?

CVE-2025-70034 is a high-severity vulnerability in Mscdex Ssh2, classified under Inefficient Regular Expression Complexity. CVSS score: 7.5/10. Published 2026-03-09.

How severe is CVE-2025-70034?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Mscdex Ssh2

CVE-2025-70034

An issue pertaining to CWE-1333: Inefficient Regular Expression Complexity (4.19) was discovered in mscdex ssh2 v1.17.0.

Vulnerability class: ReDoS (Regular Expression Denial of Service)

EPSS: 0.001 (18.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Mscdex Ssh2 — versions 1.17.0
N/a — versions n/a

Weakness classification (CWE)

CWE-1333 — Inefficient Regular Expression Complexity

References

cve@mitre.org (Product)
cve@mitre.org (Product)
cve@mitre.org (Third Party Advisory)

Frequently asked questions

What is CVE-2025-70034?: CVE-2025-70034 is a high-severity vulnerability in Mscdex Ssh2, classified under Inefficient Regular Expression Complexity. CVSS score: 7.5/10. Published 2026-03-09.
How severe is CVE-2025-70034?: High severity. CVSS v3 base score is 7.5 out of 10.