CVE-2022-50237

The ed25519-dalek crate before 2 for Rust allows a double public key signing function oracle attack. The Keypair implementation leads to a simple computation for extracting a private key.

Published: 2025-07-27 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Deferred，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-50237 is rated Low Risk (26.4/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.18%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2022-50237

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.01% 0.18% +0.17%
2 2025-07-28 — 0.01% —

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-50237

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.9 3.1 MEDIUM
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 1.4 4.0 [email protected]

Weakness enumeration for CVE-2022-50237

GitHub Security Advisory for CVE-2022-50237

GHSA-w5vr-6qhr-36cc · Severity: medium · Ecosystem: rust — `ed25519-dalek` Double Public Key Signing Function Oracle Attack

OS Trackers for CVE-2022-50237

vendor priority summary link
debian unimportant CVE-2022-50237 unimportant priority: Debian including 1 source packages (rust-curve25519-dalek), 3 status rows across 3 suites (forky, sid, trixie): resolved 3. https://security-tracker.debian.org/tracker/CVE-2022-50237
redhat medium — https://access.redhat.com/security/cve/CVE-2022-50237
suse medium CVE-2022-50237 severity moderate: SUSE including 1 source package names (rustup), 11 product×package rows across 11 product lines (SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS, SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS, … (11 product lines)): Known Not Affected 11. https://www.suse.com/security/cve/CVE-2022-50237/
ubuntu medium CVE-2022-50237 medium priority: Ubuntu including 1 source packages (rust-curve25519-dalek), 5 status rows across 5 suites (jammy, noble, plucky, questing, upstream): DNE 2, needs-triage 2, ignored 1. https://ubuntu.com/security/CVE-2022-50237

Affected software / configurations for CVE-2022-50237

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2022-50237

cvelogic Threat Intelligence