How severe is CVE-2021-29089?

CVE-2021-29089 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-29089 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-29089?

CVE-2021-29089 affects Synology Photo Station. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-29089?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-29089 published?

CVE-2021-29089 was published on 2021-06-02 and last updated on 2026-06-17.

CVE-2021-29089

CVE-2021-29089 is a critical-severity vulnerability in Synology Photo Station with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-89.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-89
Affected product: Synology Photo Station
Published: 2021-06-02
Last modified: 2026-06-17

Description

Improper neutralization of special elements used in an SQL command ('SQL Injection') vulnerability in thumbnail component in Synology Photo Station before 6.8.14-3500 allows remote attackers users to execute arbitrary SQL commands via unspecified vectors.

Frequently asked questions

What is CVE-2021-29089?: Improper neutralization of special elements used in an SQL command ('SQL Injection') vulnerability in thumbnail component in Synology Photo Station before 6.8.14-3500 allows remote attackers users to execute arbitrary SQL commands via unspecified vectors.
How severe is CVE-2021-29089?: CVE-2021-29089 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-29089 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-29089?: CVE-2021-29089 affects Synology Photo Station. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-29089?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-29089 published?: CVE-2021-29089 was published on 2021-06-02 and last updated on 2026-06-17.

References

https://www.synology.com/security/advisory/Synology_SA_20_20

Affected products (1)

cpe:2.3:a:synology:photo_station:*:*:*:*:*:*:*:*

More vulnerabilities in Synology Photo Station

CVE-2017-11161 — Critical (CVSS 9.8): Multiple SQL injection vulnerabilities in Synology Photo Station before 6.7.4-3433 and 6.3-2968 allow remote attackers…
CVE-2017-11153 — Critical (CVSS 9.8): Deserialization vulnerability in synophoto_csPhotoMisc.php in Synology Photo Station before 6.7.3-3432 and 6.3-2967…
CVE-2017-11151 — Critical (CVSS 9.8): A vulnerability in synotheme_upload.php in Synology Photo Station before 6.7.3-3432 and 6.3-2967 allows remote…
CVE-2016-10329 — Critical (CVSS 9.8): Command injection vulnerability in login.php in Synology Photo Station before 6.5.3-3226 allows remote attackers to…
CVE-2021-29092 — High (CVSS 8.8): Unrestricted upload of file with dangerous type vulnerability in file management component in Synology Photo Station…
CVE-2018-8926 — High (CVSS 8.8): Permissive regular expression vulnerability in synophoto_dsm_user in Synology Photo Station before 6.8.5-3471 and…

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