HOMEVULNERABILITIESCVE-2021-45427
CRITICAL

CVE-2021-45427

CWE-22Published: December 30, 2021· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

Emerson XWEB 300D EVO 3.0.7--3ee403 is affected by: unauthenticated arbitrary file deletion due to path traversal. An attacker can browse and delete files without any authentication due to incorrect access control and directory traversal.

NVD Source

Technical Analysis

CVE-2021-45427 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

emerson2 product(s)
xweb300d evo firmwarexweb300d evo
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://drive.google.com/file/d/1IN7p9OKRgdszMVC1TKuZQDa4ySCPmQzO/view?usp=sharing
ADVISORYhttps://drive.google.com/file/d/1RegGlCrtyQwW9DUirAbPDiIHKBWgsBea/view?usp=sharing
ADVISORYhttps://drive.google.com/file/d/1iusYdheb62dom0DnvAzEiNR-e4EXSf2k/view?usp=sharing
ADVISORYhttps://drive.google.com/file/d/1IN7p9OKRgdszMVC1TKuZQDa4ySCPmQzO/view?usp=sharing
ADVISORYhttps://drive.google.com/file/d/1RegGlCrtyQwW9DUirAbPDiIHKBWgsBea/view?usp=sharing
ADVISORYhttps://drive.google.com/file/d/1iusYdheb62dom0DnvAzEiNR-e4EXSf2k/view?usp=sharing

All References (6)

→
https://drive.google.com/file/d/1IN7p9OKRgdszMVC1TKuZQDa4ySCPmQzO/view?usp=sharingThird Party Advisory
→
https://drive.google.com/file/d/1RegGlCrtyQwW9DUirAbPDiIHKBWgsBea/view?usp=sharingThird Party Advisory
→
https://drive.google.com/file/d/1iusYdheb62dom0DnvAzEiNR-e4EXSf2k/view?usp=sharingExploit · Third Party Advisory
→
https://drive.google.com/file/d/1IN7p9OKRgdszMVC1TKuZQDa4ySCPmQzO/view?usp=sharingThird Party Advisory
→
https://drive.google.com/file/d/1RegGlCrtyQwW9DUirAbPDiIHKBWgsBea/view?usp=sharingThird Party Advisory
→
https://drive.google.com/file/d/1iusYdheb62dom0DnvAzEiNR-e4EXSf2k/view?usp=sharingExploit · Third Party Advisory

Quick Facts

CVE IDCVE-2021-45427
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-22
CISA KEVNo
Affected1 vendor(s)
PublishedDec 30, 2021

Related CVEs (CWE-22)

CVE-2010-5324
10.0
CVE-2015-0779
10.0
CVE-2013-6221
10.0
CVE-2011-5127
10.0
CVE-2011-2653
10.0
CVE-2010-5323
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-45427 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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