How severe is CVE-2022-27620?

CVE-2022-27620 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2022-27620 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-27620?

CVE-2022-27620 affects Synology Sso Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-27620?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2022-27620 published?

CVE-2022-27620 was published on 2022-08-03 and last updated on 2026-06-17.

CVE-2022-27620

CVE-2022-27620 is a medium-severity vulnerability in Synology Sso Server with a CVSS 3.x base score of 6.8. 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-22.

Key facts

Severity: Medium (CVSS 3.x base score 6.8)
EPSS exploit prediction: 1% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Synology Sso Server
Published: 2022-08-03
Last modified: 2026-06-17

Description

Improper limitation of a pathname to a restricted directory ('Path Traversal') vulnerability in webapi component in Synology SSO Server before 2.2.3-0331 allows remote authenticated users to read arbitrary files via unspecified vectors.

Frequently asked questions

What is CVE-2022-27620?: Improper limitation of a pathname to a restricted directory ('Path Traversal') vulnerability in webapi component in Synology SSO Server before 2.2.3-0331 allows remote authenticated users to read arbitrary files via unspecified vectors.
How severe is CVE-2022-27620?: CVE-2022-27620 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2022-27620 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-27620?: CVE-2022-27620 affects Synology Sso Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-27620?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-27620 published?: CVE-2022-27620 was published on 2022-08-03 and last updated on 2026-06-17.

References

https://www.synology.com/security/advisory/Synology_SA_22_13

Affected products (1)

cpe:2.3:a:synology:sso_server:*:*:*:*:*:*:*:*

More vulnerabilities in Synology Sso Server

CVE-2017-16775 — High (CVSS 7.1): Improper restriction of rendered UI layers or frames vulnerability in SSOOauth.cgi in Synology SSO Server before…

All CVEs affecting Synology Sso Server →

Other CWE-22 (Path Traversal) vulnerabilities

CVE-2026-76606 — Critical (CVSS 10.0): Joomla Extension - fabrikar.com - Path Traversal via image element in Fabrik < 4.7.3 - ???.
CVE-2026-18051 — Critical (CVSS 10.0): The W3 Total Cache WordPress plugin before 2.10.5 does not properly validate the request path it uses to build cache…
CVE-2026-74764 — Critical (CVSS 10.0): Pandora contains a path traversal vulnerability in its TAR archive extraction functionality. When processing a…
CVE-2026-16940 — Critical (CVSS 10.0): The Custom Fields WordPress plugin before 1.5.1 does not validate a user-supplied file path before deletion, allowing…
CVE-2026-67429 — Critical (CVSS 10.0): Flyto2 Core is an execution kernel for automation and AI-agent workflows. Prior to 2.26.6, image.download and related…
CVE-2026-59555 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Deletion in Participants Database <= 2.7.8.3 versions.

Browse all CWE-22 (Path Traversal) vulnerabilities →