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CVE-2021-3797

30
FAUCET Score

CVE-2021-3797 is a critical vulnerability affecting HestiaCP control panel, stemming from the "Use of Wrong Operator in String Comparison." This flaw carries a CVSS score of 9.8, indicating a network-exploitable vulnerability with low attack complexity, allowing for complete compromise of confidentiality, integrity, and availability. Despite its high severity, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.4.12CPE matchmatch criteria
cpe:2.3:a:hestiacp:control_panel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.8MEDIUM

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
2.5
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.15%
Probability of exploitation in next 30 days
EPSS Percentile
63.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0115 is in the 49th percentile among its peer group of 36,833 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

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / hestiacp/hestiacp/commit/fc68baff4f94b59e38316f886d0ce47d337042f7
PatchThird Party Advisory
huntr.dev / bounties/c24fb15c-3c84-45c8-af04-a660f8da388f
ExploitIssue TrackingPatchThird Party Advisory