What’s Vulnerable › Vulnerabilities

CVE-2018-20997

• Severity: critical (CVSS 9.8 v3.0)
• 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: 2019-08-26 · updated 2026-06-17
• Weakness: CWE-416

Description

An issue was discovered in the openssl crate before 0.10.9 for Rust. A use-after-free occurs in CMS Signing.

Affected products

• rust-openssl: before 0.10.9 — fixed in 0.10.9

How to fix

Upgrade to a fixed version: rust-openssl 0.10.9. Check the vendor advisory for mitigations.

References

• https://rustsec.org/advisories/RUSTSEC-2018-0010.html
• https://rustsec.org/advisories/RUSTSEC-2018-0010.html

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