CVE-2019-25052Network attack vector

Crash and data leak via uninitialized crypto state

Published Aug 11, 2021 · Updated Aug 5, 2024

Cryptographic state-validation failure in Linaro OP-TEE before 3.7.0 allows attackers to crash the trusted OS and disclose sensitive information. Crypto update and final paths in core/tee/tee_svc_cryp.c process a crypto context without verifying that an initialization function set its state. Exploitation requires an inconsistent or malformed call sequence that reaches those operations before initialization, producing an assertion failure and bounded data exposure.

CVSS severity9.1
Critical
EPSS probability0.87%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cryptographic state-validation failure in Linaro OP-TEE before 3.7.0 allows attackers to crash the trusted OS and disclose sensitive information. Crypto update and final paths in core/tee/tee_svc_cryp.c process a crypto context without verifying that an initialization function set its state. Exploitation requires an inconsistent or malformed call sequence that reaches those operations before initialization, producing an assertion failure and bounded data exposure.

The record

CVE
CVE-2019-25052
Published
Aug 11, 2021
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-327, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 11, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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

6.4NIST NVDAV:N/AC:L/Au:N/C:P/I:N/A:P
9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-327Use of a Broken or Risky Cryptographic Algorithm
T1499Endpoint Denial of Service

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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