How severe is CVE-2025-70888?

CVE-2025-70888 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-70888 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-70888?

CVE-2025-70888 affects Osslsigncode Project Osslsigncode. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-70888?

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

Does CVE-2025-70888 have an EU (EUVD) identifier?

Yes. CVE-2025-70888 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209012.

When was CVE-2025-70888 published?

CVE-2025-70888 was published on 2026-03-25 and last updated on 2026-06-17.

CVE-2025-70888

CVE-2025-70888 is a critical-severity vulnerability in Osslsigncode Project Osslsigncode with a CVSS 3.x base score of 9.8. 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-269.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-209012
Weakness: CWE-269
Affected product: Osslsigncode Project Osslsigncode
Published: 2026-03-25
Last modified: 2026-06-17

Description

An issue in mtrojnar Osslsigncode affected at v2.10 and before allows a remote attacker to escalate privileges via the osslsigncode.c component

Frequently asked questions

What is CVE-2025-70888?: An issue in mtrojnar Osslsigncode affected at v2.10 and before allows a remote attacker to escalate privileges via the osslsigncode.c component
How severe is CVE-2025-70888?: CVE-2025-70888 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-70888 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-70888?: CVE-2025-70888 affects Osslsigncode Project Osslsigncode. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-70888?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-70888 have an EU (EUVD) identifier?: Yes. CVE-2025-70888 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209012.
When was CVE-2025-70888 published?: CVE-2025-70888 was published on 2026-03-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:osslsigncode_project:osslsigncode:*:*:*:*:*:*:*:*

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