cve.bz

CVE-2021-29511

6.5 mediumEPSS 1.3%

Medium (6.5) in evm project evm. EPSS 1.3% chance of exploitation in the next 30 days. Fixed in evm 0.21.1, 0.22.1, 0.23.1.

evm is a pure Rust implementation of Ethereum Virtual Machine. Prior to the patch, when executing specific EVM opcodes related to memory operations that use `evm_core::Memory::copy_large`, the `evm` crate can over-allocate memory when it is not needed, making it possible for an attacker to perform denial-of-service attack. The flaw was corrected in commit `19ade85`. Users should upgrade to `==0.21.1, ==0.23.1, ==0.24.1, ==0.25.1, >=0.26.1`. There are no workarounds. Please upgrade your `evm` crate version.

Severity

CVSS 3.1

6.5 medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS
1.3% chance of exploitation in the next 30 days; higher than 70% of CVEs (scores of 2026-10-31)
CWEs
CWE-787, CWE-770
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-4jwq-572w-4388crates.ioevm<0.21.10.21.1
GHSA-4jwq-572w-4388crates.ioevm-core<0.21.10.21.1
GHSA-4jwq-572w-4388crates.ioevm>=0.22.0 <0.22.10.22.1
GHSA-4jwq-572w-4388crates.ioevm>=0.23.0 <0.23.10.23.1
GHSA-4jwq-572w-4388crates.ioevm>=0.24.0 <0.24.10.24.1
GHSA-4jwq-572w-4388crates.ioevm>=0.25.0 <0.25.10.25.1
GHSA-4jwq-572w-4388crates.ioevm>=0.26.0 <0.26.10.26.1
GHSA-4jwq-572w-4388crates.ioevm-core>=0.22.0 <0.22.10.22.1
GHSA-4jwq-572w-4388crates.ioevm-core>=0.23.0 <0.23.10.23.1
GHSA-4jwq-572w-4388crates.ioevm-core>=0.24.0 <0.24.10.24.1
GHSA-4jwq-572w-4388crates.ioevm-core>=0.25.0 <0.25.10.25.1
GHSA-4jwq-572w-4388crates.ioevm-core>=0.26.0 <0.26.10.26.1

References

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