CVE-2024-48942Network attack vector

MFA bypass via overbroad TOTP validation window

Published Oct 9, 2024 · Updated Oct 10, 2024

Improper interaction-frequency control in Syracom Secure Login (2FA) through 3.1.4.5 allows remote attackers to brute-force 2FA PINs. The default Time Window Size of 30 accepts the preceding 30 and following 30 TOTP tokens while brute-force detection is disabled. No authenticated session is required to query the public PIN-validation endpoint, and a guessed PIN defeats the second factor for a login attempt.

CVSS severity5.9
Medium
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper interaction-frequency control in Syracom Secure Login (2FA) through 3.1.4.5 allows remote attackers to brute-force 2FA PINs. The default Time Window Size of 30 accepts the preceding 30 and following 30 TOTP tokens while brute-force detection is disabled. No authenticated session is required to query the public PIN-validation endpoint, and a guessed PIN defeats the second factor for a login attempt.

The record

CVE
CVE-2024-48942
Published
Oct 9, 2024
Updated
Oct 10, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-799, T1110
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 9, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 10, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
5.9NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A: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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-799Improper Control of Interaction Frequency
T1110Brute Force

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

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Your stack

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