Is CVE-2026-1229 in the CISA KEV catalog?

No. CVE-2026-1229 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-1229?

CVE-2026-1229 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2026-1229?

CVE-2026-1229 has an EPSS score of 0.40% (32th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-1229?

Upgrade circl to 1.6.3 or later.

CVE & CISA-KEV Catalog

CVE-2026-1229

CRITICAL

9.8

CVSS v3

NVD

Description

The CombinedMult function in the CIRCL ecc/p384 package (secp384r1 curve) produces an incorrect value for specific inputs. The issue is fixed by using complete addition formulas. ECDH and ECDSA signing relying on this curve are not affected. The bug was fixed in v1.6.3 https://github.com/cloudflare/circl/releases/tag/v1.6.3 .

CWE-682

How to fix

Remediation Available

circlNVD

Affected:< 1.6.3Fixed in:1.6.3CVE-2026-1229derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

0.40%probability of exploitation in 30 days

32ndpercentile

Low risk: more likely to be exploited than 32% of all known CVEs.

References

Product1

github.com

Related Vulnerabilities

Other CWE-682 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2022-30780	High	7.5	56%	-	Fix
CVE-2020-14422	Medium	5.9	12%	-	Fix
CVE-2016-7433	Medium	5.3	9.8%	-	Fix
CVE-2023-35641	High	8.8	7.2%	-	Fix
CVE-2018-8319	Critical	9.8	7.0%	-	-
CVE-2020-0022	High	8.8	5.4%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-03-03.