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CVE-2021-33182

17
FAUCET Score

CVE-2021-33182 is a path traversal vulnerability in the PDF Viewer component of Synology DiskStation Manager (DSM) versions prior to 6.2.4-25553. This flaw allows remote authenticated users to read limited files through unspecified vectors. With a CVSS score of 4.3 (Medium), it requires authentication and has low impact on confidentiality, but no impact on integrity or availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 6.2.4-25553CPE matchmatch criteria
cpe:2.3:o:synology:diskstation_manager:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.0MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.1
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.11%
Probability of exploitation in next 30 days
EPSS Percentile
62.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0111 is in the 76th percentile among its peer group of 21,977 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

synology.com / security/advisory/Synology_SA_21_03
Not ApplicableVendor Advisory