CVE-2022-48331Public exploit

Trustlet crash via integer-wrapped feature-name copy

Published Jun 26, 2023 · Updated Feb 13, 2025

Buffer overflow in Widevine Trusted Application 5.0.0 through 5.1.1 allows attackers to crash the trustlet via a crafted command. In drm_save_keys, adding an attacker-controlled feature_name_len of 0xffffffff to prefix_len wraps to a small value, bypassing the size check before memcpy performs an oversized write. Reachability requires sending command 0x50001 to the Widevine trustlet through the QSEE communication interface; the demonstrated consequence is an application fault and crash.

CVSS severity9.8
Critical
EPSS probability0.93%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in Widevine Trusted Application 5.0.0 through 5.1.1 allows attackers to crash the trustlet via a crafted command. In drm_save_keys, adding an attacker-controlled feature_name_len of 0xffffffff to prefix_len wraps to a small value, bypassing the size check before memcpy performs an oversized write. Reachability requires sending command 0x50001 to the Widevine trustlet through the QSEE communication interface; the demonstrated consequence is an application fault and crash.

The record

CVE
CVE-2022-48331
Published
Jun 26, 2023
Updated
Feb 13, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-190, T1499.004
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Jun 26, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record 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 vectorlocal
Required privilegesUnavailable in this record.

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

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)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-190Integer Overflow or Wraparound
T1499.004Application or System Exploitation

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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