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CVE-2021-35963

32
FAUCET Score

CVE-2021-35963 describes a critical unauthenticated arbitrary file upload vulnerability in the Orca HCM digital learning platform. This flaw, rated 9.8 CVSS, allows remote attackers to upload malicious scripts due to insufficient file format filtering in the upload function, leading to potential Remote Code Execution (RCE). While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion with 10 mentions, indicating awareness and potential interest among researchers.

Impacted Technologies

VendorProductVersion(s)CPE
<= 10.0CPE matchmatch criteria
cpe:2.3:a:learningdigital:orca_hcm:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.41%
Probability of exploitation in next 30 days
EPSS Percentile
82.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0241 is in the 72nd percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

chtsecurity.com / news/ba7b3ae7-14f3-4970-b3f6-4d97d8c7ea25
Third Party Advisory
twcert.org.tw / tw/cp-132-4923-d68e6-1.html
Third Party Advisory