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CVE-2021-1498

98
FAUCET Score

CVE-2021-1498 is a critical command injection vulnerability affecting the web-based management interface of Cisco HyperFlex HX products. An unauthenticated, remote attacker can exploit this flaw to execute arbitrary commands. With a CVSS score of 9.8, this vulnerability poses a severe risk due to its network-based attack vector, low attack complexity, and complete compromise of confidentiality, integrity, and availability. This CVE is actively exploited in the wild, with public exploit code available in Metasploit and Nuclei templates, and has garnered significant community discussion and media coverage.

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

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
100.00%
Probability of exploitation in next 30 days
EPSS Percentile
100.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Added to KEV · Nov 3, 2021
Metasploit: Cisco HyperFlex HX Data Platform Command Execution · May 5, 2021
Nuclei: CVE-2021-1498 · Jul 6, 2021
This CVE's current EPSS score of 1.0000 is in the 100th percentile among its peer group of 36,862 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

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

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
packetstormsecurity.com / files/162976/Cisco-HyperFlex-HX-Data-Platform-Command-Execution.html
ExploitThird Party AdvisoryVDB Entry
tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-hyperflex-rce-TjjNrkpR
Vendor Advisory