CVE-2016-6303

CRITICAL
9.8
CVSS Score
Published: September 16, 2016 at 12:00 AM UTC
Updated: June 17, 2026 at 12:50 AM UTC
2 products affected across 2 vendorsOpenSSLNode.js

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Severity
CRITICAL9.8
Exploit prediction
EPSS 32%

Description

Integer overflow in the MDC2_Update function in crypto/mdc2/mdc2dgst.c in OpenSSL before 1.1.0 allows remote attackers to cause a denial of service (out-of-bounds write and application crash) or possibly have unspecified other impact via unknown vectors.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 0.12.164.0.0 ≤ v < 4.6.06.0.0 ≤ v < 6.6.0
Affected range stops below 0.12.16, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.6.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.6.0, so it looks safe — our inference, not a vendor statement

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-787

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