What’s Vulnerable › Vulnerabilities

CVE-2021-36219

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-09-27 · updated 2026-06-17
• Weakness: CWE-824

Description

An issue was discovered in SKALE sgxwallet 1.58.3. The provided input for ECALL 14 triggers a branch in trustedEcdsaSign that frees a non-initialized pointer from the stack. An attacker can chain multiple enclave calls to prepare a stack that contains a valid address. This address is then freed, resulting in compromised integrity of the enclave. This was resolved after v1.58.3 and not reproducible in sgxwallet v1.77.0.

Affected products

• Skale Sgxwallet: 1.58.3

References

• https://github.com/skalenetwork/sgxwallet/commit/4e9b5b7526db083177e81f8bafeaa4914d276a82
• https://github.com/skalenetwork/sgxwallet/releases
• https://github.com/skalenetwork/sgxwallet/commit/4e9b5b7526db083177e81f8bafeaa4914d276a82
• https://github.com/skalenetwork/sgxwallet/releases

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