CVE & CISA-KEV Catalog

CVE-2017-3731

HIGHEPSS 99th pctl
7.5
CVSS v3
NVD

Description

If an SSL/TLS server or client is running on a 32-bit host, and a specific cipher is being used, then a truncated packet can cause that server or client to perform an out-of-bounds read, usually resulting in a crash. For OpenSSL 1.1.0, the crash can be triggered when using CHACHA20/POLY1305; users should upgrade to 1.1.0d. For Openssl 1.0.2, the crash can be triggered when using RC4-MD5; users who have not disabled that algorithm should update to 1.0.2k.

CWE-125Out-of-bounds Read

How to fix

Remediation Available
opensslDebian
Fixed in:1.1.0d-1CVE-2017-3731
Fixed in:1.1.0d-1CVE-2017-3731
Fixed in:1.1.0d-1CVE-2017-3731
Fixed in:1.1.0d-1CVE-2017-3731
libssl1.0.0Ubuntu
Fixed in:1.0.1f-1ubuntu2.22USN-3181-1
Fixed in:1.0.2g-1ubuntu4.6USN-3181-1
opensslUbuntu
Fixed in:1.0.1f-1ubuntu2.22USN-3181-1
Fixed in:1.0.2g-1ubuntu4.6USN-3181-1
Node.jsWindows application
Affected:6.9.0 6.9.5Fixed in:6.9.5Node.js Foundation
Affected:4.2.0 4.7.3Fixed in:4.7.3Node.js Foundation
Affected:7.0.0 7.5.0Fixed in:7.5.0Node.js Foundation
Node.js (LTS)Windows application
Affected:6.9.0 6.9.5Fixed in:6.9.5Node.js Foundation
Affected:4.2.0 4.7.3Fixed in:4.7.3Node.js Foundation
Affected:7.0.0 7.5.0Fixed in:7.5.0Node.js Foundation

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

57.59%probability of exploitation in 30 days
99thpercentile

Very high risk: more likely to be exploited than 99% of all known CVEs.

References

Vendor Advisory1

Related Vulnerabilities

Other CWE-125 (Out-of-bounds Read) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2014-0160High7.5100%KEVFix
CVE-2025-5777High7.5100%KEV + RansomFix
CVE-2021-4034High7.895%KEVFix
CVE-2023-21769High7.592%-Fix
CVE-2020-8794Critical9.889%-Fix
CVE-2023-49285High8.689%-Fix
Embed a live status badge for CVE-2017-3731
CVE-2017-3731 severity badge

Markdown

[![CVE-2017-3731](https://tridentstack.com/cve/badge/CVE-2017-3731.svg)](https://tridentstack.com/cve/CVE-2017-3731)

HTML

<a href="https://tridentstack.com/cve/CVE-2017-3731"><img src="https://tridentstack.com/cve/badge/CVE-2017-3731.svg" alt="CVE-2017-3731"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

See how it worksStart freeThis CVE lookup is free and always will be.

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-13.