CVE-2021-25266

TOTP secret-key disclosure via insecure storage

Published Apr 27, 2022 · Updated Aug 3, 2024

Insecure storage in affected Sophos Android authenticator apps allows physically proximate attackers with root access to read TOTP secret keys. Sophos has not published the storage location or missing protection that makes the secret keys retrievable. The phone must be unlocked and rooted; Sophos Authenticator 3.4 and earlier and Intercept X for Mobile before 9.7.3495 are affected.

CVSS severity3.9
Low
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insecure storage in affected Sophos Android authenticator apps allows physically proximate attackers with root access to read TOTP secret keys. Sophos has not published the storage location or missing protection that makes the secret keys retrievable. The phone must be unlocked and rooted; Sophos Authenticator 3.4 and earlier and Intercept X for Mobile before 9.7.3495 are affected.

The record

CVE
CVE-2021-25266
Published
Apr 27, 2022
Updated
Aug 3, 2024
Vendor
Sophos
Product
Sophos Intercept X for Mobile
Classifications
CWE-922, T1409
Attack vector
physical
Privileges
admin

Timeline

How it unfolded

  1. Apr 27, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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?

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

  1. Affected versionversion=unspecified <9.7.3495

What conditions does exploitation require?

Attack vectorphysical
Required privilegesadmin

What is affected?

Sophos · Sophos Intercept X for Mobileversion=unspecified <9.7.3495
Sophos · Sophos Authenticatorversion=unspecified <=3.4

Published CVSS scores

2.1NIST National Vulnerability DatabaseAV:L/AC:L/Au:N/C:P/I:N/A:N
3.9Sophos LimitedCVSS:3.1/AV:P/AC:L/PR:H/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)
Vectorphysical
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-922Insecure Storage of Sensitive Information
T1409Stored Application Data

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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