CVE-2022-49040

Client crash via unchecked connection buffer copy

Published Sep 26, 2024 · Updated Sep 26, 2024

Classic buffer overflow in Synology Drive Client before 3.5.0-16084 allows local users with administrator privileges to crash the client. Synology identifies the locus only as connection management and states that it copies input without checking its size; the triggering input is undisclosed. Administrator access is required, and the documented consequence is limited to interruption of the client process.

CVSS severity4.4
Medium
EPSS probability0.17%
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 Synology Drive Client before 3.5.0-16084 allows local users with administrator privileges to crash the client. Synology identifies the locus only as connection management and states that it copies input without checking its size; the triggering input is undisclosed. Administrator access is required, and the documented consequence is limited to interruption of the client process.

The record

CVE
CVE-2022-49040
Published
Sep 26, 2024
Updated
Sep 26, 2024
Vendor
Synology
Product
Synology Drive Client
Classifications
CWE-120, T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Sep 26, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 26, 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=* <3.5.0-16084

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Synology · Synology Drive Clientversion=* <3.5.0-16084

Published CVSS scores

4.4Synology Inc.CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1499.004Application or System Exploitation

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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