How severe is CVE-2023-44273?

CVE-2023-44273 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-2023-44273 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-44273?

CVE-2023-44273 affects Consensys Gnark-crypto. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-44273?

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.

When was CVE-2023-44273 published?

CVE-2023-44273 was published on 2023-09-28 and last updated on 2026-06-17.

CVE-2023-44273

CVE-2023-44273 is a critical-severity vulnerability in Consensys Gnark-crypto 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-502.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-502
Affected product: Consensys Gnark-crypto
Published: 2023-09-28
Last modified: 2026-06-17

Description

Consensys gnark-crypto through 0.11.2 allows Signature Malleability. This occurs because deserialisation of EdDSA and ECDSA signatures does not ensure that the data is in a certain interval.

Frequently asked questions

What is CVE-2023-44273?: Consensys gnark-crypto through 0.11.2 allows Signature Malleability. This occurs because deserialisation of EdDSA and ECDSA signatures does not ensure that the data is in a certain interval.
How severe is CVE-2023-44273?: CVE-2023-44273 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-2023-44273 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-44273?: CVE-2023-44273 affects Consensys Gnark-crypto. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-44273?: 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.
When was CVE-2023-44273 published?: CVE-2023-44273 was published on 2023-09-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:consensys:gnark-crypto:*:*:*:*:*:*:*:*

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