CVE-2023-43515

Local memory corruption via unchecked tmecom buffer copy

Published Apr 1, 2024 · Updated Aug 2, 2024

Classic buffer overflow in Qualcomm Snapdragon HLOS allows local users to corrupt memory through tmecom with DEBUG_FS enabled. Qualcomm identifies an unchecked buffer copy in tmecom but does not publish the affected function, buffer, input path, or copy operation. Reachability requires low privileges, DEBUG_FS, and a kernel-address-sanitizer workload; exploitation requires no additional user interaction.

CVSS severity6.6
Medium
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Classic buffer overflow in Qualcomm Snapdragon HLOS allows local users to corrupt memory through tmecom with DEBUG_FS enabled. Qualcomm identifies an unchecked buffer copy in tmecom but does not publish the affected function, buffer, input path, or copy operation. Reachability requires low privileges, DEBUG_FS, and a kernel-address-sanitizer workload; exploitation requires no additional user interaction.

The record

CVE
CVE-2023-43515
Published
Apr 1, 2024
Updated
Aug 2, 2024
Vendor
Qualcomm
Product
Snapdragon
Classifications
CWE-120
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 1, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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=FastConnect 6900
  2. Affected versionversion=FastConnect 7800
  3. Affected versionversion=Snapdragon 8 Gen 1 Mobile Platform
  4. Affected versionversion=WCD9380
  5. Affected versionversion=WSA8830
  6. Affected versionversion=WSA8835

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Qualcomm · Snapdragonversion=FastConnect 6900; version=FastConnect 7800; version=Snapdragon 8 Gen 1 Mobile Platform; version=WCD9380; version=WSA8830; version=WSA8835

Published CVSS scores

6.6Qualcomm, Inc.CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/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.

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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

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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