CVE-2015-8805

critical

Published 2016-02-23 · Modified 2026-05-06

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CVSS v3

9.8

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

CVSS v4 NEW

—

not yet in upstream

VIR risk

9.8

Description

The ecc_256_modq function in ecc-256.c in Nettle before 3.2 does not properly handle carry propagation and produces incorrect output in its implementation of the P-256 NIST elliptic curve, which allows attackers to have unspecified impact via unknown vectors, a different vulnerability than CVE-2015-8803.

Predictions

Exploit likelihood

97%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

SUSE Affected 3 releases

Version	Status	Fixed in
42.1	Affected	—
13.2	Affected	—
13.1	Affected	—

Ubuntu Affected 2 releases

Version	Status	Fixed in
15.10	Affected	—
14.04	Affected	—

Debian Fixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`3.2-1`
sid	Fixed	`3.2-1`
forky	Fixed	`3.2-1`
bullseye	Fixed	`3.2-1`
bookworm	Fixed	`3.2-1`

Application impact

Vendor	Product	Versions	Fixed
nettle_project	nettle	`{"endIncluding":"3.1.1"}`

References

CWEs

CWE-310

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.