Security readout for executives and security teams
Plain-English summary
CVE-2021-29089 is a critical SQL injection flaw in Synology Photo Station. A remote unauthenticated attacker could potentially run database commands, risking data theft, tampering, or service disruption. The affected range is Photo Station before 6.8.14-3500.
Executive priority
Treat as urgent for any exposed Synology Photo Station deployment. The issue carries full confidentiality, integrity, and availability impact, but urgency depends on whether vulnerable instances remain deployed and reachable.
Technical view
The thumbnail component of Synology Photo Station before 6.8.14-3500 improperly neutralizes SQL special elements, allowing arbitrary SQL command execution through unspecified vectors. The CVSS 3.1 score is 9.8 with network attack vector, low complexity, no privileges, and no user interaction.
Likely exposure
Exposure is limited to organizations running Synology Photo Station versions earlier than 6.8.14-3500, especially if the service is reachable from untrusted networks or the internet.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. They support remote, unauthenticated exploitability in principle, but the attack vectors are unspecified, so validation should focus on version and exposure rather than exploit reproduction.
Researcher notes
Public details in the bundle identify SQL injection in the thumbnail component but do not specify request vectors, affected subversions, or exploit availability. Avoid assuming exploitation without additional evidence.
Mitigation direction
- Upgrade Synology Photo Station to 6.8.14-3500 or later.
- Follow Synology advisory SA-20-20 for product-specific remediation guidance.
- Restrict external access to Photo Station until remediation is confirmed.
- Review logs for unusual database or Photo Station activity.
Validation and detection
- Inventory Synology Photo Station deployments and record installed versions.
- Confirm no instance is running a version earlier than 6.8.14-3500.
- Check whether Photo Station is exposed to the internet or untrusted networks.
- Verify remediation status against Synology advisory SA-20-20.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-89: Database access and collection lookup
Injection into data stores can inform collection, data access, and exfiltration detection reviews. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupDatabase behavior lookup
The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-29089 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.synology.com/security/advisory/Synology_SA_20_20CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.