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CVE-2021-1499

79
FAUCET Score

CVE-2021-1499 is an unauthenticated file upload vulnerability in the web-based management interface of Cisco HyperFlex HX Data Platform, affecting various HX220c and HX240c models. This medium-severity vulnerability (CVSS 5.3) allows a remote attacker to upload files with tomcat8 user permissions due to missing authentication in the upload function. While not currently on the CISA KEV catalog, exploit modules are publicly available, including a Metasploit module for remote code execution and Nuclei templates for arbitrary file upload. Despite the availability of exploit code, there is minimal community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.0\(2e\)CPE matchmatch criteria
cpe:2.3:o:cisco:hyperflex_hx_data_platform:*:*:*:*:*:*:*:*
>= 4.5, < 4.5\(2a\)CPE matchmatch criteria
cpe:2.3:o:cisco:hyperflex_hx_data_platform:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
80.43%
Probability of exploitation in next 30 days
EPSS Percentile
99.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Metasploit: Cisco HyperFlex HX Data Platform unauthenticated file upload to RCE (CVE-2021-1499) · May 5, 2021
Nuclei: CVE-2021-1499 · Oct 2, 2021
This CVE's current EPSS score of 0.8043 is in the 100th percentile among its peer group of 23,705 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 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

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

packetstormsecurity.com / files/163203/Cisco-HyperFlex-HX-Data-Platform-File-Upload-Remote-Code-Execution.html
ExploitThird Party AdvisoryVDB Entry
tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-hyperflex-upload-KtCK8Ugz
Vendor Advisory