CVE-2024-51557Network attack vector

OTP flooding via unrestricted authenticated requests

Published Nov 4, 2024 · Updated Nov 4, 2024

Improper rate limiting in 63 moons technologies limited Wave 2.0 before 1.1.7 allows remote authenticated users to flood OTP requests. The OTP-request API endpoint accepts repeated authenticated requests without enforcing an interaction-frequency limit. A valid account is required, and sustained requests can bombard the target with OTP messages and interrupt service availability.

CVSS severity7.1
High
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Improper rate limiting in 63 moons technologies limited Wave 2.0 before 1.1.7 allows remote authenticated users to flood OTP requests. The OTP-request API endpoint accepts repeated authenticated requests without enforcing an interaction-frequency limit. A valid account is required, and sustained requests can bombard the target with OTP messages and interrupt service availability.

The record

CVE
CVE-2024-51557
Published
Nov 4, 2024
Updated
Nov 4, 2024
Vendor
63 moons technologies limited
Product
Wave 2.0
Classifications
CWE-799, T1499.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 4, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=<1.1.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

63 moons technologies limited · Wave 2.0version=<1.1.7

Published CVSS scores

6.5NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.1CERT-InCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-799Improper Control of Interaction Frequency
T1499.003Application Exhaustion Flood

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo