How severe is CVE-2023-32956?

CVE-2023-32956 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-2023-32956 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-32956?

CVE-2023-32956 affects Synology Router Manager. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-32956?

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-2023-32956 published?

CVE-2023-32956 was published on 2023-05-16 and last updated on 2026-06-17.

CVE-2023-32956

CVE-2023-32956 is a critical-severity vulnerability in Synology Router Manager 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.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Synology Router Manager
Published: 2023-05-16
Last modified: 2026-06-17

Description

Improper neutralization of special elements used in an OS command ('OS Command Injection') vulnerability in CGI component in Synology Router Manager (SRM) before 1.2.5-8227-6 and 1.3.1-9346-3 allows remote attackers to execute arbitrary code via unspecified vectors.

Frequently asked questions

What is CVE-2023-32956?: Improper neutralization of special elements used in an OS command ('OS Command Injection') vulnerability in CGI component in Synology Router Manager (SRM) before 1.2.5-8227-6 and 1.3.1-9346-3 allows remote attackers to execute arbitrary code via unspecified vectors.
How severe is CVE-2023-32956?: CVE-2023-32956 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-2023-32956 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-32956?: CVE-2023-32956 affects Synology Router Manager. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-32956?: 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-2023-32956 published?: CVE-2023-32956 was published on 2023-05-16 and last updated on 2026-06-17.

References

https://www.synology.com/en-global/security/advisory/Synology_SA_22_25

Affected products (1)

cpe:2.3:a:synology:router_manager:*:*:*:*:*:*:*:*

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