CVE-2021-41716Public exploitNetwork attack vector

Unauthenticated account takeover via fixed reusable OTPs

Published Dec 7, 2021 · Updated Jul 9, 2026

OTP fixation in Maharashtra State Electricity Board Mahavitaran Android Application 8.20 and earlier allows remote attackers to take over accounts. The password-reset workflow associates each OTP identifier with a fixed code, allowing a code learned for that identifier to reset another user's password. No authentication or user interaction is required; exploitation grants control of the targeted Mahavitaran account.

CVSS severity9.8
Critical
EPSS probability1.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OTP fixation in Maharashtra State Electricity Board Mahavitaran Android Application 8.20 and earlier allows remote attackers to take over accounts. The password-reset workflow associates each OTP identifier with a fixed code, allowing a code learned for that identifier to reset another user's password. No authentication or user interaction is required; exploitation grants control of the targeted Mahavitaran account.

The record

CVE
CVE-2021-41716
Published
Dec 7, 2021
Updated
Jul 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-287, T1098
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 7, 2021CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 2026Record 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

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P

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 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 exploitPublished

Weakness, pattern, technique

CWE-287Improper Authentication
T1098Account Manipulation

Public exploit references

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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