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CVE-2015-8805
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…
Critical9.8EPSS 2.8%
- Published
- Updated
- Reserved
- Assigned by
- mitre
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Critical9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 2.8% · top 13% of all CVEs (5 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Weakness
Affected products
n/a
- affected n/a
References (10)
- openSUSE-SU-2016:0486 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- https://blog.fuzzing-project.org/38-Miscomputations-of-elliptic-curve-scalar-multiplications-in-Nettle.html (opens in a new tab)x_refsource_MISCx_transferred
- openSUSE-SU-2016:0477 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- https://git.lysator.liu.se/nettle/nettle/commit/c71d2c9d20eeebb985e3872e4550137209e3ce4d (opens in a new tab)x_refsource_CONFIRMx_transferred
- USN-2897-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- openSUSE-SU-2016:0475 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- [oss-security] 20160202 Miscomputations of elliptic curve scalar multiplications in Nettle (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- RHSA-2016:2582 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- 84272 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- [oss-security] 20160202 Re: Miscomputations of elliptic curve scalar multiplications in Nettle (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2015-8805)Record last updated .