Medium 5.1Published Mar 3, 2016

CVE-2016-0702The MOD_EXP_CTIME_COPY_FROM_PREBUF function in crypto/bn/bn_exp.c in OpenSSL 1.0.1 before 1.0.1s and 1.0.2 before 1.0.2g does not properly consider cache-bank access times during modular exponentiati…

Updated under an hour ago (Nov 2, 2026, 1:20 AM ET)

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The MOD_EXP_CTIME_COPY_FROM_PREBUF function in crypto/bn/bn_exp.c in OpenSSL 1.0.1 before 1.0.1s and 1.0.2 before 1.0.2g does not properly consider cache-bank access times during modular exponentiation, which makes it easier for local users to discover RSA keys by running a crafted application on the same Intel Sandy Bridge CPU core as a victim and leveraging cache-bank conflicts, aka a "CacheBleed" attack.

CVSS: 5.1 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE): CWE-200
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	1.0.1; 1.0.1; 1.0.1; 1.0.1; 1.0.1a; 1.0.1b; 1.0.1c; 1.0.1d; and 24 more ranges	NVD
nodejs node.js nodejs:node.js	from 4.0.0 through 4.1.2; from 4.2.0 before 4.3.2; from 5.0.0 before 5.7.1	NVD
debian debian_linux debian:debian_linux	7.0; 8.0	NVD
canonical ubuntu_linux canonical:ubuntu_linux	12.04; 14.04; 15.10	NVD

References

References

http://cachebleed.info	broken-link
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759	third-party-advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178358.html	mailing-list, third-party-advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178817.html	mailing-list, third-party-advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00001.html	mailing-list, third-party-advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00002.html	mailing-list, third-party-advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00003.html	mailing-list, third-party-advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00004.html	mailing-list, third-party-advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00005.html	mailing-list, third-party-advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00006.html	mailing-list, third-party-advisory
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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.