CVE-2021-47961
CVE-2021-47961 is covered by the Synology-SA-26:05 security bulletin. Not in the CISA KEV catalog. High advisory severity. 1 advisory from Synology.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
CVE-2021-47961 at a glance
- CISA KEV
- Not listed (catalog checked )
- Highest advisory severity
- High
- Vendor advisories
- 1 from Synology
- VulniPulse record
- Published · Updated
Is CVE-2021-47961 exploited?
No exploitation is reported in the sources VulniPulse tracks: CVE-2021-47961 is not in the CISA KEV catalog (checked ) and no tracked advisory for it reports exploitation. That is not proof the vulnerability cannot be exploited.
How do I fix CVE-2021-47961?
This CVE is tracked through a multi-CVE bulletin, so its fixed releases may differ from the bulletin-wide values below. Check the vendor source.
Vendor advisory comparison
Synology
1 advisory- Advisory severityHigh8.1
High [CVE-2021-47960 +1] files or directories accessible to external parties vulnerability in Synology SSL VPN Client before 1.4.5-0684 allows remote attackers to access files within the installation directory via a local HTTP server bound to the loopback interface
Synology-SA-26:05Source published Source updated
This bulletin covers 2 CVEs. The products, versions, score and guidance below describe the bulletin; check its source for applicability to this specific CVE.
Synology has released a security update for the Synology SSL VPN Client utility to address vulnerabilities: CVE-2021-47960 allows remote attackers to access sensitive files from the SSL VPN Client installation directory via a local HTTP service when a user interacts with a crafted web page. CVE-2021-47961 allows remote attackers to obtain or manipulate the PIN code in SSL VPN Client, potentially leading to unauthorized VPN configuration and traffic interception when a user interacts with a crafted web page. Please refer to the
- Affected products in this advisory
- Synology SSL VPN Client
- Source-reported affected versions
- Synology SSL VPN Client before 1.4.5-0684
- Source-reported fixed versions
- 1.4.5-0684
- Mitigation guidance
- Upgrade the affected Synology product to a fixed release: 1.4.5-0684.
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