Medium 5.9Published May 4, 2017

CVE-2016-7055There is a carry propagating bug in the Broadwell-specific Montgomery multiplication procedure in OpenSSL 1.0.2 and 1.1.0 before 1.1.0c that handles input lengths divisible by, but longer than 256 bi…

Updated under an hour ago (Nov 2, 2026, 12:10 AM ET)

Does this affect you?

It affects openssl and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stackFree account, 3 products Every CVE for openssl Exploited in the last 30 days

There is a carry propagating bug in the Broadwell-specific Montgomery multiplication procedure in OpenSSL 1.0.2 and 1.1.0 before 1.1.0c that handles input lengths divisible by, but longer than 256 bits. Analysis suggests that attacks against RSA, DSA and DH private keys are impossible. This is because the subroutine in question is not used in operations with the private key itself and an input of the attacker's direct choice. Otherwise the bug can manifest itself as transient authentication and key negotiation failures or reproducible erroneous outcome of public-key operations with specially crafted input. Among EC algorithms only Brainpool P-512 curves are affected and one presumably can attack ECDH key negotiation. Impact was not analyzed in detail, because pre-requisites for attack are considered unlikely. Namely multiple clients have to choose the curve in question and the server has to share the private key among them, neither of which is default behaviour. Even then only clients that chose the curve will be affected.

CVSS: 5.9 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

openssl openssl openssl:openssl	from 1.0.2 before 1.0.2k; from 1.1.0 before 1.1.0c	NVD
nodejs node.js nodejs:node.js	from 4.0.0 through 4.1.2; from 4.2.0 before 4.7.3; from 6.0.0 through 6.8.1; from 6.9.0 before 6.9.5; from 7.0.0 before 7.5.0	NVD

References

References

http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html	patch, third-party-advisory
http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html	patch, third-party-advisory
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html	patch, third-party-advisory
http://www.securityfocus.com/bid/94242	third-party-advisory, us-government-resource, vdb-entry
http://www.securitytracker.com/id/1037261	third-party-advisory, vdb-entry
https://access.redhat.com/errata/RHSA-2018:2185	third-party-advisory
https://access.redhat.com/errata/RHSA-2018:2186	third-party-advisory
https://access.redhat.com/errata/RHSA-2018:2187	third-party-advisory
https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbgn03752en_us	third-party-advisory
https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03744en_us	third-party-advisory, vdb-entry
1–10 of 15

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.