How severe is CVE-2025-57801?

CVE-2025-57801 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2025-57801 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-57801?

CVE-2025-57801 affects Consensys Gnark. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-57801?

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-2025-57801 have an EU (EUVD) identifier?

Yes. CVE-2025-57801 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-25624.

When was CVE-2025-57801 published?

CVE-2025-57801 was published on 2025-08-22 and last updated on 2026-06-17.

CVE-2025-57801

CVE-2025-57801 is a critical-severity vulnerability in Consensys Gnark with a CVSS 3.x base score of 9.1. 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-347.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v4: 8.6
EPSS exploit prediction: 0% (10th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-25624
Weakness: CWE-347
Affected product: Consensys Gnark
Published: 2025-08-22
Last modified: 2026-06-17

Description

gnark is a zero-knowledge proof system framework. In versions prior to 0.14.0, the Verify function in eddsa.go and ecdsa.go used the S value from a signature without asserting that 0 ≤ S < order, leading to a signature malleability vulnerability. Because gnark’s native EdDSA and ECDSA circuits lack essential constraints, multiple distinct witnesses can satisfy the same public inputs. In protocols where nullifiers or anti-replay checks are derived from R and S, this enables signature malleability and may allow double spending. This issue has been addressed in version 0.14.0.

Frequently asked questions

What is CVE-2025-57801?: gnark is a zero-knowledge proof system framework. In versions prior to 0.14.0, the Verify function in eddsa.go and ecdsa.go used the S value from a signature without asserting that 0 ≤ S < order, leading to a signature malleability vulnerability. Because gnark’s native EdDSA and ECDSA circuits lack essential constraints, multiple distinct witnesses can satisfy the same public inputs. In protocols where nullifiers or anti-replay checks are derived from R and S, this enables signature malleability and may allow double spending. This issue has been addressed in version 0.14.0.
How severe is CVE-2025-57801?: CVE-2025-57801 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2025-57801 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-57801?: CVE-2025-57801 affects Consensys Gnark. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-57801?: 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-2025-57801 have an EU (EUVD) identifier?: Yes. CVE-2025-57801 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-25624.
When was CVE-2025-57801 published?: CVE-2025-57801 was published on 2025-08-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:consensys:gnark:*:*:*:*:*:*:*:*

More vulnerabilities in Consensys Gnark

CVE-2025-58157 — High (CVSS 7.5): gnark is a zero-knowledge proof system framework. In version 0.12.0, there is a potential denial of service…
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