CVE-2026-22082Network attack vector

Session hijacking via credential-derived session identifiers

Published Jan 9, 2026 · Updated Jan 9, 2026

Session fixation in Tenda F3 firmware allows remote attackers to hijack authenticated web-management sessions by intercepting traffic. The web interface uses login credentials themselves as the session identifier and transmits that identifier insecurely. Exploitation requires visibility into an authenticated administrator's network traffic and exposes sensitive router configuration, with limited integrity and availability effects.

CVSS severity8.8
High
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Session fixation in Tenda F3 firmware allows remote attackers to hijack authenticated web-management sessions by intercepting traffic. The web interface uses login credentials themselves as the session identifier and transmits that identifier insecurely. Exploitation requires visibility into an authenticated administrator's network traffic and exposes sensitive router configuration, with limited integrity and availability effects.

The record

CVE
CVE-2026-22082
Published
Jan 9, 2026
Updated
Jan 9, 2026
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
F3
Classifications
CWE-384, CAPEC-60, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=F3 v3.0 Firmware V12.01.01.41
  2. Affected versionversion=F3 v3.0 Firmware V12.01.01.42
  3. Affected versionversion=F3 v3.0 Firmware V12.01.01.48
  4. Affected versionversion=F3 v3.0 Firmware V12.01.01.52
  5. Affected versionversion=F3 v3.0 Firmware V12.01.01.55
  6. Affected versionversion=F3 v4.0 Firmware V03.03.01.40

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · F3version=F3 v3.0 Firmware V12.01.01.41; version=F3 v3.0 Firmware V12.01.01.42; version=F3 v3.0 Firmware V12.01.01.48; version=F3 v3.0 Firmware V12.01.01.52; version=F3 v3.0 Firmware V12.01.01.55; version=F3 v4.0 Firmware V03.03.01.40

Published CVSS scores

8.8Indian Computer Emergency Response Team (CERT-In)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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-384Session Fixation
CAPEC-60Reusing Session IDs (aka Session Replay)
T1557Adversary-in-the-Middle

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo