CVE-2025-24800Disclosure

LOWCVSS 9.3 · CRITICAL

Signal is active with 1 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Hyperbridge is a hyper-scalable coprocessor for verifiable, cross-chain interoperability. A critical vulnerability was discovered in the ismp-grandpa crate, that allowed a malicious prover easily convince the verifier of the finality of arbitrary headers. This could be used to steal funds or compromise other kinds of cross-chain applications. This vulnerability is fixed in 15.0.1.

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0.0/ 10 priority

Sources & remediation

Other references

Weakness type (CWE)

CWE-347CWE-670

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

1 mentions across 1 observed day

What's happening

Technical details provided in 1 signal
Disclosure: 1 classified signal
1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d

Signal classification1 categories

Disclosure

1100.0%

Full discourse1 post

Havananirvana@hermez042178d
Disclosure
@Phalcon_xyz @hyperbridge additionally there's a critical Consensus Signature Bypass (CVE-2025-24800) `handleConsensus()` calls `IConsensus(host.consensusClient()).verifyConsensus()`. There's a known critical bug in ismp-grandpa < v15.0.1 where the verifier ONLY accepts INVALID signatures.
Post summary
The tweet highlights a critical consensus signature bypass vulnerability (CVE‑2025‑24800) in ismp‑grandpa versions below 15.0.1, noting that the verifier incorrectly accepts only invalid signatures.
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