Is CVE-2015-8804 in the CISA KEV catalog?

No. CVE-2015-8804 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2015-8804?

CVE-2015-8804 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2015-8804?

CVE-2015-8804 has an EPSS score of 3.87% (89th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2015-8804?

Upgrade nettle on debian 11 to 3.2-1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2015-8804

CRITICALEPSS 89th pctl

9.8

CVSS v3

NVD

Description

x86_64/ecc-384-modp.asm in Nettle before 3.2 does not properly handle carry propagation and produces incorrect output in its implementation of the P-384 NIST elliptic curve, which allows attackers to have unspecified impact via unknown vectors.

CWE-254 CWE-310Cryptographic Issues

How to fix

Remediation Available

nettleDebian

Fixed in:3.2-1CVE-2015-8804

libnettle4Ubuntu

Fixed in:2.7.1-1ubuntu0.1USN-2897-1

nettleUbuntu

Fixed in:2.7.1-1ubuntu0.1USN-2897-1

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

Exploit Intelligence

3.87%probability of exploitation in 30 days

89thpercentile

Elevated risk: more likely to be exploited than 89% of all known CVEs.

References

Patch1

git.lysator.liu.se

Vendor Advisory1

lists.lysator.liu.se

Other references9

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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 2026-05-06.