How severe is CVE-2025-70034?

CVE-2025-70034 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-70034 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-70034?

CVE-2025-70034 affects Mscdex Ssh2. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-70034?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-70034 have an EU (EUVD) identifier?

Yes. CVE-2025-70034 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-208436.

When was CVE-2025-70034 published?

CVE-2025-70034 was published on 2026-03-09 and last updated on 2026-06-17.

CVE-2025-70034

CVE-2025-70034 is a high-severity vulnerability in Mscdex Ssh2 with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1333.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-208436
Weakness: CWE-1333
Affected product: Mscdex Ssh2
Published: 2026-03-09
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2025-70034?: An issue pertaining to CWE-1333: Inefficient Regular Expression Complexity (4.19) was discovered in mscdex ssh2 v1.17.0.
How severe is CVE-2025-70034?: CVE-2025-70034 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-70034 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-70034?: CVE-2025-70034 affects Mscdex Ssh2. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-70034?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-70034 have an EU (EUVD) identifier?: Yes. CVE-2025-70034 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-208436.
When was CVE-2025-70034 published?: CVE-2025-70034 was published on 2026-03-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:mscdex:ssh2:1.17.0:*:*:*:*:*:*:*

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