CVE-2021-29089Network attack vector

Arbitrary SQL execution via improper thumbnail input neutralization

Published Jun 2, 2021 · Updated Sep 16, 2024

SQL injection in Synology Photo Station before 6.8.14-3500 allows remote attackers to execute arbitrary SQL commands through its thumbnail component. The component fails to neutralize SQL special elements before placing attacker-controlled input into a database command, but the affected request and parameter are undisclosed. No authentication or user interaction is required, and successful exploitation grants the database-level ability to read, alter, or delete accessible data.

CVSS severity9.8
Critical
EPSS probability1.93%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SQL injection in Synology Photo Station before 6.8.14-3500 allows remote attackers to execute arbitrary SQL commands through its thumbnail component. The component fails to neutralize SQL special elements before placing attacker-controlled input into a database command, but the affected request and parameter are undisclosed. No authentication or user interaction is required, and successful exploitation grants the database-level ability to read, alter, or delete accessible data.

The record

CVE
CVE-2021-29089
Published
Jun 2, 2021
Updated
Sep 16, 2024
Vendor
Synology
Product
Synology Photo Station
Classifications
CWE-89, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 2, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=unspecified <6.8.14-3500

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Synology · Synology Photo Stationversion=unspecified <6.8.14-3500

Published CVSS scores

9.8Synology Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10.0NIST NVDAV:N/AC:L/Au:N/C:C/I:C/A:C

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

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
T1190Exploit Public-Facing Application

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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