MEDIUM
CVE-2021-21886
CWE-22Published: December 22, 2021· Updated: Jun 17, 2026
4.3
CVSS v3.1
Official Description
A directory traversal vulnerability exists in the Web Manager FSBrowsePage functionality of Lantronix PremierWave 2050 8.9.0.0R4. A specially crafted HTTP request can lead to information disclosure. An attacker can make an authenticated HTTP request to trigger this vulnerability.
Technical Analysis
CVE-2021-21886 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Affected Vendors & Products
lantronix2 product(s)
premierwave 2050 firmwarepremierwave 2050
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
All References (2)
→
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1330Exploit · Technical Description · Third Party Advisory
→
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1330Exploit · Technical Description · Third Party Advisory
Quick Facts
CVE IDCVE-2021-21886
CVSS Score4.3 / 10
SeverityMEDIUM
WeaknessCWE-22
CISA KEVNo
Affected1 vendor(s)
PublishedDec 22, 2021
Related CVEs (CWE-22)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2021-21886 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.