CVE-2022-24884

CRITICALNVD 10.010.0—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 10.0 under NVD CVSS v3. EPSS exploit probability: 1.0%, top 41% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Trending — 3 sources updated this week
10.0
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 10.0Exploit: NoneExposed: 0

A fix is available — apply it.

ecdsautils is a tiny collection of programs used for ECDSA (keygen, sign, verify). ecdsa_verify_[prepare_]legacy() does not check whether the signature values r and s are non-zero. A signature consisting only of zeroes is always considered valid, making it trivial to forge signatures. Requiring multiple signatures from different public keys does not mitigate the issue: ecdsa_verify_list_legacy() will accept an arbitrary number of such forged signatures. Both the ecdsautil verify CLI command and the libecdsautil library are affected. The issue has been fixed in ecdsautils 0.4.1. All older versions of ecdsautils (including versions before the split into a library and a CLI utility) are vulnerable.

CVSS v3
10.0
EG Score
10.0(medium)
EG Risk
60(Track)
EG Risk 60/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity100% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
59.1%
KEV
Not listed

Published

May 6, 2022

Last Modified

November 21, 2024

Advisory Details (8)

Auto-updated Jul 18, 2026
Patch available. Sources: github_commit, github.
github_commit

commit 39b6d0a77414 (freifunk-gluon/ecdsautils)

Fix landed in freifunk-gluon/ecdsautils commit 39b6d0a77414 — awaiting tagged release

https://github.com/freifunk-gluon/ecdsautils/commit/39b6d0a77414fd41614953a0e185c4eefa2f88ad
github_commit

commit 1d4b091abdf1 (freifunk-gluon/ecdsautils)

Fix landed in freifunk-gluon/ecdsautils commit 1d4b091abdf1 — awaiting tagged release

https://github.com/freifunk-gluon/ecdsautils/commit/1d4b091abdf15ad7b2312535b5b95ad70f6dbd08
generic

[SECURITY] [DSA 5132-1] ecdsautils security update

https://www.debian.org/security/2022/dsa-5132
generic

[SECURITY] Fedora 34 Update: ecdsautils-0.4.1-1.fc34 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L7UBR3M4U3LA46BHXYSH7EN5GDG44GK7/
generic

[SECURITY] Fedora 36 Update: ecdsautils-0.4.1-1.fc36 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G2JT57AAFIEL7JDO2ZBV25JKYME5NU54/
generic

[SECURITY] Fedora 35 Update: ecdsautils-0.4.1-1.fc35 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4AKQH5WCBMJA3ODCSNERY6HVX4BX3ITG/
generic Patch Available

[SECURITY] [DLA 2997-1] ecdsautils security update

https://lists.debian.org/debian-lts-announce/2022/05/msg00007.html
github Patch Available

Improper Verification of ECDSA Signatures · Advisory · freifunk-gluon/ecdsautils · GitHub

https://github.com/freifunk-gluon/ecdsautils/security/advisories/GHSA-qhcg-9ffp-78pw

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuecdsautils (0.3.2+git20151018-2ubuntu0.16.04.1~esm1) @ xenial2026-05-25ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 14× in last 7d / 47× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 103 total refreshes for this CVE.

  1. 2026-07-23 02:09 UTCEG score recompute
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Frequently asked(5)

What is CVE-2022-24884?
CVE-2022-24884 is a critical vulnerability published on May 6, 2022. ecdsautils is a tiny collection of programs used for ECDSA (keygen, sign, verify). ecdsaverify[prepare]legacy() does not check whether the signature values r and s are non-zero. A signature consisting only of zeroes is always considered valid, making it trivial to forge signatures. Requiring…
When was CVE-2022-24884 disclosed?
CVE-2022-24884 was first published in the National Vulnerability Database on May 6, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-24884 actively exploited?
CVE-2022-24884 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 59.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2022-24884?
CVE-2022-24884 has a CVSS v3 base score of 10.0 (NVD).
How do I remediate CVE-2022-24884?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-24884, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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