Security readout for executives and security teams
Plain-English summary
CVE-2026-22080 affects specific Tenda F3/N300 router firmware. The router’s web administration interface can transmit login credentials only Base64-encoded, which is reversible and not encryption. Someone on the same network could capture those credentials and take over the router. This is most urgent where these devices sit in offices, branches, retail sites, or shared networks.
Executive priority
Treat as high priority for environments using these Tenda routers. The business risk is loss of router control and network disruption from credential exposure. Prioritize inventory, segmentation of management access, and vendor guidance review before broader remediation planning.
Technical view
The issue is CWE-319: cleartext transmission of sensitive information. CERT-In/CVE describe Base64-encoded administrative credentials sent through the web interface on listed Tenda firmware versions. CVSS 4.0 is 8.7 High with adjacent-network attack vector, low complexity, no privileges, and no user interaction. The provided sources do not name a patch or fixed version.
Likely exposure
Exposure is limited to organizations using the listed Tenda 300Mbps Wireless Router F3 or N300 Easy Setup Router firmware versions. Risk is highest when attackers can join, monitor, or compromise the same local or wireless network used for router administration.
Exploitation context
The sources describe local network interception of administrative traffic, not internet-scale remote exploitation. The CVE is not marked in CISA KEV in the provided bundle, and no cited source states active exploitation. Successful exploitation could expose credentials and allow unauthorized router access.
Researcher notes
Evidence is limited to the CVE/CERT-In description and CVSS metadata. Affected versions are explicitly listed; default status is unaffected for other versions. No public exploit activity, patch version, or vendor workaround is provided in the supplied sources. Avoid assuming broader Tenda model impact without confirmation.
Mitigation direction
- Inventory Tenda F3/N300 routers and record exact firmware versions.
- Check Tenda and CERT-In guidance for firmware updates or official mitigations.
- Restrict router administration to trusted management networks and authorized administrators.
- Avoid administering affected routers over shared or untrusted networks.
- Replace unsupported affected devices if no vendor fix is available.
Validation and detection
- Compare deployed model and firmware against the affected version list.
- Confirm whether administrative access is limited to trusted networks.
- Review whether router administration occurs over shared Wi-Fi or guest networks.
- Check vendor/CERT-In advisories for any newer fixed firmware notice.
- Monitor router admin logs for unexpected logins or configuration changes.
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
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-319: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-22080 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.7 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
8.7HighVector: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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.
Cleartext Transmission of Sensitive Information
Cleartext Transmission of Sensitive Information represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.