{"cve":"CVE-2023-5981","nvd":{"published":"2023-11-28T12:15:07.040","modified":"2026-10-14T22:17:21.480","status":"Modified","description":"A vulnerability was found that the response times to malformed ciphertexts in RSA-PSK ClientKeyExchange differ from response times of ciphertexts with correct PKCS#1 v1.5 padding.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","score":5.9},"cwes":["CWE-208","CWE-203"],"references":["https://access.redhat.com/errata/RHSA-2024:0155","https://access.redhat.com/errata/RHSA-2024:0319","https://access.redhat.com/errata/RHSA-2024:0399","https://access.redhat.com/errata/RHSA-2024:0451","https://access.redhat.com/errata/RHSA-2024:0533"],"products":["debian:debian_linux","fedoraproject:fedora","gnu:gnutls","redhat:linux"],"source":"nvd","synced_at":"2026-10-19T21:42:07.670898610+00:00"},"epss":{"cve":"CVE-2023-5981","score":0.01267,"percentile":0.69567,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}