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CVE-2021-45427

41
FAUCET Score

CVE-2021-45427 is a critical unauthenticated arbitrary file deletion vulnerability affecting Emerson XWEB 300D EVO 3.0.7--3ee403 firmware, stemming from path traversal and incorrect access control. With a CVSS score of 9.8, this flaw allows unauthenticated attackers to remotely delete files with low attack complexity, leading to complete loss of availability and potential impact on confidentiality and integrity. While there is no known active exploitation, public exploit code, or KEV listing, the vulnerability has garnered significant community discussion, indicating potential future interest.

Impacted Technologies

VendorProductVersion(s)CPE
3.0.7CPE matchmatch criteria
cpe:2.3:o:emerson:xweb300d_evo_firmware:3.0.7:3ee403:*:*:*:*:*:*

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
19.04%
Probability of exploitation in next 30 days
EPSS Percentile
97.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.1904 is in the 93rd 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

drive.google.com / file/d/1IN7p9OKRgdszMVC1TKuZQDa4ySCPmQzO/view
Third Party Advisory
drive.google.com / file/d/1iusYdheb62dom0DnvAzEiNR-e4EXSf2k/view
ExploitThird Party Advisory
drive.google.com / file/d/1RegGlCrtyQwW9DUirAbPDiIHKBWgsBea/view
Third Party Advisory