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Github.com/cloudflare/circl: circl-fourq: missing and wrong validation can lead to incorrect results

Collected exploitation and prediction evidence

Risk source coverage

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

Dated risk observations

Risk history is separate from CNA/OSV content history. Daily score drift is retained but only an upward crossing of 10% triggers the prediction change event.

Immutable source observations

9 recorded revisions

Each citation identifies one complete source statement. Source modification dates and the time this installation observed them are distinct. Latest history includes records historically associated by source identifiers; a removed alias is not a current equivalence claim. Exact citations show that source record's own earlier observations. Failed reads and unchanged polls do not rewrite history.

1 Nov 2026 01:19:47 UTC

A flaw was found in CIRCL's implementation of the FourQ elliptic curve. This vulnerability allows an attacker to compromise session security via low-order point injection and incorrect point validation during Diffie-Hellman key exchange.

euvd · EUVD-2025-23815 · Published

30 Oct 2026 01:04:46 UTC

A flaw was found in CIRCL's implementation of the FourQ elliptic curve. This vulnerability allows an attacker to compromise session security via low-order point injection and incorrect point validation during Diffie-Hellman key exchange.

euvd · EUVD-2025-23815 · Published

29 Oct 2026 05:48:04 UTC

A flaw was found in CIRCL's implementation of the FourQ elliptic curve. This vulnerability allows an attacker to compromise session security via low-order point injection and incorrect point validation during Diffie-Hellman key exchange.

nvd · CVE-2025-8556 · Published

27 Oct 2026 23:59:12 UTC

A flaw was found in CIRCL's implementation of the FourQ elliptic curve. This vulnerability allows an attacker to compromise session security via low-order point injection and incorrect point validation during Diffie-Hellman key exchange.

euvd · EUVD-2025-23815 · Published

27 Oct 2026 07:22:55 UTC

Github.com/cloudflare/circl: circl-fourq: missing and wrong validation can lead to incorrect results

cve-program · CVE-2025-8556 · Published

25 Oct 2026 04:17:18 UTC

A flaw was found in CIRCL's implementation of the FourQ elliptic curve. This vulnerability allows an attacker to compromise session security via low-order point injection and incorrect point validation during Diffie-Hellman key exchange.

nvd · CVE-2025-8556 · Published

24 Oct 2026 13:19:41 UTC

CIRCL-Fourq: Missing and wrong validation can lead to incorrect results

osv · GHSA-2x5j-vhc8-9cwm · Published

24 Oct 2026 13:19:41 UTC

CIRCL-Fourq: Missing and wrong validation can lead to incorrect results in github.com/cloudflare/circl

osv · GO-2025-3754 · Published

23 Oct 2026 15:48:27 UTC

Github.com/cloudflare/circl: circl-fourq: missing and wrong validation can lead to incorrect results

cve-program · CVE-2025-8556 · Published

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources last checked 1 Nov 11:28 UTC · 273 of 273 readable · 270 fully read · checking again after a restart · documentation 469/469 current