CVE-2022-49039

Administrator command execution via out-of-bounds write

Published Sep 26, 2024 · Updated Sep 26, 2024

An out-of-bounds write in Synology Drive Client before 3.4.0-15721 allows local users with administrator privileges to execute arbitrary commands. The backup-task manager writes beyond an intended buffer, but Synology has not disclosed the affected routine, attacker-controlled field, or command-execution path. Exploitation requires local administrative access; successful abuse executes commands in the client's security context.

CVSS severity6.7
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An out-of-bounds write in Synology Drive Client before 3.4.0-15721 allows local users with administrator privileges to execute arbitrary commands. The backup-task manager writes beyond an intended buffer, but Synology has not disclosed the affected routine, attacker-controlled field, or command-execution path. Exploitation requires local administrative access; successful abuse executes commands in the client's security context.

The record

CVE
CVE-2022-49039
Published
Sep 26, 2024
Updated
Sep 26, 2024
Vendor
Synology
Product
Synology Drive Client
Classifications
CWE-787, T1203
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

6.7Synology Inc.CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
6.7NIST NVDCVSS:3.1/AV:L/AC:L/PR:H/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1203Exploitation for Client Execution

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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