CVE-2025-70034 Denial of service in n/a
An attacker can cause a denial of service in the mscdex ssh2 library by exploiting inefficient regular expression complexity.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-70034?
CVE-2025-70034 is a high-severity denial of service vulnerability in n/a, published on 9 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue pertaining to CWE-1333: Inefficient Regular Expression Complexity (4.19) was discovered in mscdex ssh2 v1.17.0.
Weakness: CWE-1333
Which versions are affected by CVE-2025-70034?
It affects 1 product.
Products include Mscdex Ssh2.
How do I fix CVE-2025-70034?
No fix has been published for CVE-2025-70034 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-70034 being exploited?
There is no known exploitation of CVE-2025-70034 in the wild and no public exploit code.
Sources
Also known as GHSA-qrjm-6rpx-w2rx.