Security readout for executives and security teams
Plain-English summary
Some Tenda F3 and N300 router firmware versions use login credentials as the web admin session ID. If an attacker can intercept insecure network traffic, they may hijack an administrator’s active session and view or alter sensitive router configuration. This is most urgent where router management is reachable over untrusted networks or weakly protected local networks.
Executive priority
Prioritize remediation for affected routers managing business networks, especially if administration is exposed beyond trusted LANs. Treat as high risk because successful hijacking may compromise router configuration, traffic handling, and network security posture.
Technical view
CVE-2026-22082 is a CWE-384 session fixation/management weakness in the web-based administrative interface of affected Tenda wireless routers. The session identifier is derived from login credentials and can be captured during insecure transmission. CVSS v4.0 is 8.8, with network attack vector, low complexity, no privileges, and no user interaction required.
Likely exposure
Exposure is limited to listed Tenda 300Mbps Wireless Router F3 and N300 Easy Setup Router firmware versions. Risk is highest when the admin interface is accessible across untrusted networks, management traffic is not protected, or attackers can observe local network traffic.
Exploitation context
The source describes remote exploitation by intercepting network traffic and capturing the session ID. The CVE is not marked in KEV, and the provided sources do not state active exploitation or public exploit availability.
Researcher notes
Evidence is limited to the CVE record and CERT-In advisory reference. Affected versions listed include F3 v3.0 V12.01.01.41, .42, .48, .52, .55, and F3 v4.0 V03.03.01.40. No source-provided patch version, workaround details, or exploitation-in-the-wild evidence were provided.
Mitigation direction
- Check Tenda and CERT-In guidance for fixed firmware or official mitigations.
- Restrict router admin access to trusted management networks only.
- Disable remote administration if not required.
- Avoid administering affected routers over untrusted or shared networks.
- Replace or isolate devices if no vendor fix is available.
Validation and detection
- Inventory Tenda F3 and N300 routers in use.
- Compare firmware versions against the affected version list.
- Verify whether web administration is reachable from untrusted networks.
- Review network controls limiting access to router management interfaces.
- Check vendor or CERT-In advisories for updated remediation information.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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CWE-384: Exact CWE lookup
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Open ATT&CK lookupCVE-2026-22082 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 8.8 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
8.8HighVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.cert-in.org.in/s2cMainServlet?pageid=PUBVLNOTES01&VLCODE=CIVN-2026-0004CVE reference · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Session Fixation
Session Fixation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.