CVE-2021-34808
CVE-2021-34808 is a medium-severity vulnerability in Synology Media Server with a CVSS 3.x base score of 5.8. 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-918.
Key facts
- Severity: Medium (CVSS 3.x base score 5.8)
- CVSS v2: 5.0
- EPSS exploit prediction: 1% (59th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-918
- Affected product: Synology Media Server
- Published:
- Last modified:
Description
Server-Side Request Forgery (SSRF) vulnerability in cgi component in Synology Media Server before 1.8.3-2881 allows remote attackers to access intranet resources via unspecified vectors.
Frequently asked questions
- What is CVE-2021-34808?
- Server-Side Request Forgery (SSRF) vulnerability in cgi component in Synology Media Server before 1.8.3-2881 allows remote attackers to access intranet resources via unspecified vectors.
- How severe is CVE-2021-34808?
- CVE-2021-34808 has a CVSS 3.x base score of 5.8, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
- Is CVE-2021-34808 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-34808?
- CVE-2021-34808 affects Synology Media Server. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-34808?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-34808 published?
- CVE-2021-34808 was published on 2021-06-18 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:synology:media_server:*:*:*:*:*:*:*:*
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