CVE-2024-8122

Status: DeferredMedium (5.9)—

The WSO2 Identity Server fails to enforce a default expiry time for SMS One-Time Passwords (OTPs) used in multi-factor authentication (MFA). This allows unused OTPs to remain valid indefinitely, presenting an opportunity for malicious actors to conduct brute force attacks by repeatedly guessing the OTP.

The absence of automatic expiration for OTPs grants attackers an unlimited timeframe to attempt guessing the correct code. A successful brute force attack can lead to an MFA bypass, resulting in the unauthorized takeover of a user's account and compromising the security and privacy of both the individual and the system.

CVSS

Version: 3.1
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Base score: 5.9

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.25%
Percentile among all scored CVEs: 16
Score date: 10/13/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

ExploitationT1190 Exploit Public-Facing Applicationinitial access75 %
Primary impactT1078.001 Default Accountsstealth · persistence · privilege escalation · initial access80 %
Secondary impactT1098.001 Additional Cloud Credentialspersistence · privilege escalation70 %

Vulnerabilidad de aplicación expuesta en red (AV:N, PR:N): bypass de MFA por fuerza bruta contra OTP sin expiración, resultando en acceso no autorizado a cuentas de usuario.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Privileged Account Management Network Segmentation Multi-factor Authentication Vulnerability Scanning User Account Management Password Policies

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Wso2 — Identity Server^AI

CWEs

CWE-613

References

https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2024-3149/

Raw JSON (NVD)

Show

{
  "id": "CVE-2024-8122",
  "cveTags": [],
  "metrics": {
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          "options": [
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            },
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          "version": "2.0.3",
          "timestamp": "2026-10-08T17:13:30.802405Z"
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          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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      "affectedData": [
        {
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    {
      "lang": "en",
      "value": "The WSO2 Identity Server fails to enforce a default expiry time for SMS One-Time Passwords (OTPs) used in multi-factor authentication (MFA). This allows unused OTPs to remain valid indefinitely, presenting an opportunity for malicious actors to conduct brute force attacks by repeatedly guessing the OTP.\n\nThe absence of automatic expiration for OTPs grants attackers an unlimited timeframe to attempt guessing the correct code. A successful brute force attack can lead to an MFA bypass, resulting in the unauthorized takeover of a user's account and compromising the security and privacy of both the individual and the system."
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  "lastModified": "2026-10-08T17:17:10.723",
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