How severe is CVE-2017-11149?

CVE-2017-11149 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2017-11149 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-11149?

CVE-2017-11149 primarily affects Synology Download Station. In total, 33 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-11149?

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

When was CVE-2017-11149 published?

CVE-2017-11149 was published on 2017-08-14 and last updated on 2026-06-17.

CVE-2017-11149

CVE-2017-11149 is a medium-severity vulnerability in Synology Download Station with a CVSS 3.x base score of 6.5. 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 6.5)
CVSS v2: 4.0
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-918
Affected product: Synology Download Station
Published: 2017-08-14
Last modified: 2026-06-17

Description

Server-side request forgery (SSRF) vulnerability in Downloader in Synology Download Station 3.8.x before 3.8.5-3475 and 3.x before 3.5-2984 allows remote authenticated users to download arbitrary local files via crafted URI.

Frequently asked questions

What is CVE-2017-11149?: Server-side request forgery (SSRF) vulnerability in Downloader in Synology Download Station 3.8.x before 3.8.5-3475 and 3.x before 3.5-2984 allows remote authenticated users to download arbitrary local files via crafted URI.
How severe is CVE-2017-11149?: CVE-2017-11149 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2017-11149 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-11149?: CVE-2017-11149 primarily affects Synology Download Station. In total, 33 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-11149?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-11149 published?: CVE-2017-11149 was published on 2017-08-14 and last updated on 2026-06-17.

References

https://www.synology.com/en-global/support/security/Synology_SA_17_28_Download_Station

Affected products (33)

cpe:2.3:a:synology:download_station:3.2-2295:*:*:*:*:*:*:*
cpe:2.3:a:synology:download_station:3.3-2382:*:*:*:*:*:*:*
cpe:2.3:a:synology:download_station:3.3-2383:*:*:*:*:*:*:*
cpe:2.3:a:synology:download_station:3.3-2386:*:*:*:*:*:*:*
cpe:2.3:a:synology:download_station:3.4-2477:*:*:*:*:*:*:*
cpe:2.3:a:synology:download_station:3.4-2478:*:*:*:*:*:*:*
cpe:2.3:a:synology:download_station:3.4-2480:*:*:*:*:*:*:*
cpe:2.3:a:synology:download_station:3.4-2485:*:*:*:*:*:*:*
cpe:2.3:a:synology:download_station:3.4-2486:*:*:*:*:*:*:*
cpe:2.3:a:synology:download_station:3.4-2489:*:*:*:*:*:*:*
cpe:2.3:a:synology:download_station:3.4-2490:*:*:*:*:*:*:*
cpe:2.3:a:synology:download_station:3.4-2514:*:*:*:*:*:*:*
cpe:2.3:a:synology:download_station:3.4-2555:*:*:*:*:*:*:*
cpe:2.3:a:synology:download_station:3.4-2557:*:*:*:*:*:*:*
cpe:2.3:a:synology:download_station:3.4-2558:*:*:*:*:*:*:*
cpe:2.3:a:synology:download_station:3.5-2638:*:*:*:*:*:*:*
cpe:2.3:a:synology:download_station:3.5-2705:*:*:*:*:*:*:*
cpe:2.3:a:synology:download_station:3.5-2706:*:*:*:*:*:*:*
cpe:2.3:a:synology:download_station:3.5-2955:*:*:*:*:*:*:*
cpe:2.3:a:synology:download_station:3.5-2956:*:*:*:*:*:*:*
cpe:2.3:a:synology:download_station:3.5-2962:*:*:*:*:*:*:*
cpe:2.3:a:synology:download_station:3.5-2963:*:*:*:*:*:*:*
cpe:2.3:a:synology:download_station:3.5-2967:*:*:*:*:*:*:*
cpe:2.3:a:synology:download_station:3.5-2968:*:*:*:*:*:*:*
cpe:2.3:a:synology:download_station:3.5-2970:*:*:*:*:*:*:*
cpe:2.3:a:synology:download_station:3.5-2973:*:*:*:*:*:*:*
cpe:2.3:a:synology:download_station:3.5-2980:*:*:*:*:*:*:*
cpe:2.3:a:synology:download_station:3.5-2982:*:*:*:*:*:*:*
cpe:2.3:a:synology:download_station:3.8.0-3416:*:*:*:*:*:*:*
cpe:2.3:a:synology:download_station:3.8.1-3420:*:*:*:*:*:*:*
cpe:2.3:a:synology:download_station:3.8.2-3455:*:*:*:*:*:*:*
cpe:2.3:a:synology:download_station:3.8.3-3458:*:*:*:*:*:*:*
cpe:2.3:a:synology:download_station:3.8.4-3468:*:*:*:*:*:*:*

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