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CVE-2023-50981

HIGH
7.5
CVSS Score
Published: December 18, 2023 at 12:00 AM UTC
Updated: June 17, 2026 at 06:40 AM UTC
1 product affected across 1 vendorCrypto++

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Severity
HIGH7.5
Exploit prediction
EPSS 0.8%
SSVC
No known exploit

Description

ModularSquareRoot in Crypto++ (aka cryptopp) through 8.9.0 allows attackers to cause a denial of service (infinite loop) via crafted DER public-key data associated with squared odd numbers, such as the square of 268995137513890432434389773128616504853.

Affected

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

Crypto++· Cryptopp
95%
v ≤ 8.9.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

ExploitIssue Tracking
Source: [email protected]
https://github.com/weidai11/cryptopp/issues/1249

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-835

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