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Vulnerability record · CVE-2018-20997 · published 26 August 2019

CVE-2018-20997: Rust-openssl project rust-openssl use after free vulnerability

RRust Openssl Project · Rust Openssl

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

9.8 CVSS 3.0 Critical EPSS 1.7% · top 23.1% CWE-416 · Use after free
9.8CVSS 3.0 base score, v2 7.5
1.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

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

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://rustsec.org/advisories/RUSTSEC-2018-0010.html Third Party Advisory
https://rustsec.org/advisories/RUSTSEC-2018-0010.html Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2018-20997), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.