CVE-2025-21607

LOW EPSS 46.2%
Published Jan 14, 20251y ago · Modified Jun 17, 20262w ago
2.3 CVSS 4.0
Low
Find Similar
Published Jan 14, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

Description

Vyper is a Pythonic Smart Contract Language for the EVM. When the Vyper Compiler uses the precompiles EcRecover (0x1) and Identity (0x4), the success flag of the call is not checked. As a consequence an attacker can provide a specific amount of gas to make these calls fail but let the overall execution continue. Then the execution result can be incorrect. Based on EVM's rules, after the failed precompile the remaining code has only 1/64 of the pre-call-gas left (as 63/64 were forwarded and spent). Hence, only fairly simple executions can follow the failed precompile calls. Therefore, we found no significantly impacted real-world contracts. None the less an advisory has been made out of an abundance of caution. This issue is fixed in 0.4.1.

CVSS Details

Base Score
2.3
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity High
Privileges Required Low
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
46.2% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-670

Affected Products 1

VendorProductVersionRange
vyperlangvyper* <0.4.1

References 3

  • github.com https://github.com/vyperlang/vyper/commit/7136eab0a254aa2ff7ddca41cc05f2ee1fa99caf
  • github.com https://github.com/vyperlang/vyper/pull/4451
  • github.com https://github.com/vyperlang/vyper/security/advisories/GHSA-vgf2-gvx8-xwc3
    ExploitVendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.