CVE-2025-54426 Polkadot Frontier contains silent failure in Curve25519 arithmetic precompiles with malformed points
Attackers can cause incorrect cryptographic results in Polkadot Frontier by submitting malformed Curve25519 points, bypassing intended validation checks.
- 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-2025-54426?
CVE-2025-54426 is a critical vulnerability in polkadot-evm frontier, published on 28 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Polkadot Frontier is an Ethereum and EVM compatibility layer for Polkadot and Substrate. In versions prior to commit 36f70d1, the Curve25519Add and Curve25519ScalarMul precompiles incorrectly handle invalid Ristretto point representations. Instead of returning an error, they silently treat invalid input bytes as the Ristretto identity element, leading to potentially incorrect cryptographic results. This is fixed in commit 36f70d1.
Weakness: CWE-327
Which versions are affected by CVE-2025-54426?
How do I fix CVE-2025-54426?
No fix has been published for CVE-2025-54426 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-54426 being exploited?
There is no known exploitation of CVE-2025-54426 in the wild and no public exploit code.
Sources
Also known as GHSA-v4q3-23rh-w5mw.