How severe is CVE-2021-29090?

CVE-2021-29090 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-29090 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-29090?

CVE-2021-29090 affects Synology Photo Station. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-29090?

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

When was CVE-2021-29090 published?

CVE-2021-29090 was published on 2021-06-02 and last updated on 2026-06-17.

CVE-2021-29090

CVE-2021-29090 is a high-severity vulnerability in Synology Photo Station with a CVSS 3.x base score of 7.2. 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: High (CVSS 3.x base score 7.2)
CVSS v2: 9.0
EPSS exploit prediction: 2% (74th 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 PHP component in Synology Photo Station before 6.8.14-3500 allows remote authenticated users to execute arbitrary SQL command via unspecified vectors.

Frequently asked questions

What is CVE-2021-29090?: Improper neutralization of special elements used in an SQL command ('SQL Injection') vulnerability in PHP component in Synology Photo Station before 6.8.14-3500 allows remote authenticated users to execute arbitrary SQL command via unspecified vectors.
How severe is CVE-2021-29090?: CVE-2021-29090 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-29090 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-29090?: CVE-2021-29090 affects Synology Photo Station. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-29090?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-29090 published?: CVE-2021-29090 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-2021-29089 — Critical (CVSS 9.8): Improper neutralization of special elements used in an SQL command ('SQL Injection') vulnerability in thumbnail…
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…

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