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CVE-2015-8618

20
FAUCET Score

CVE-2015-8618 describes a critical vulnerability in the math/big library of Go versions 1.5.x prior to 1.5.3, specifically affecting the Int.Exp Montgomery code's handling of carry propagation, which can lead to incorrect output and facilitate the extraction of private RSA keys. This vulnerability carries a CVSS v3 score of 7.5 (HIGH), indicating a network-exploitable flaw with low attack complexity that could result in high confidentiality impact. While the vulnerability is severe, there is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
42.1CPE matchmatch criteria
cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*
1.5CPE matchmatch criteria
cpe:2.3:a:golang:go:1.5:*:*:*:*:*:*:*
1.5.1CPE matchmatch criteria
cpe:2.3:a:golang:go:1.5.1:*:*:*:*:*:*:*
1.5.2CPE matchmatch criteria
cpe:2.3:a:golang:go:1.5.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.63%
Probability of exploitation in next 30 days
EPSS Percentile
83.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0263 is in the 71st percentile among its peer group of 51,506 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2015-8618Low

golang: Carry propagation in Int.Exp Montgomery code in math/big library

Dec 21, 2015

References

lists.fedoraproject.org / pipermail/package-announce/2016-January/175642.html
lists.fedoraproject.org / pipermail/package-announce/2016-January/176179.html
lists.opensuse.org / opensuse-updates/2016-05/msg00077.html
github.com / golang/go/issues/13515
Patch
go-review.googlesource.com
groups.google.com / forum
openwall.com / lists/oss-security/2015/12/21/6
openwall.com / lists/oss-security/2015/12/22/9
openwall.com / lists/oss-security/2016/01/13/7