CVE-2026-34474
Published: 06 May 2026
Summary
CVE-2026-34474 is a high-severity Exposure of Sensitive Information to an Unauthorized Actor (CWE-200) vulnerability in Com (inferred from references). Its CVSS base score is 7.5 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 17.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
CVE-2026-34474 is a sensitive data exposure vulnerability affecting the web interface of ZTE ZXHN H298A firmware version 1.1 and H108N firmware version 2.6. A crafted unauthenticated request can cause the device to return sensitive device and account information in its response, which in affected builds includes the administrator password and WLAN PSK; some firmware versions return only partial identifiers such as serial number, ESSID, or MAC addresses. The issue is tracked under CWE-200 and carries a CVSS 3.1 score of 7.5.
An attacker with network access to the router web interface can exploit the flaw without authentication or user interaction to obtain credentials that enable authentication bypass and full network compromise. The exposure directly supports subsequent attacks such as administrative takeover or wireless network access using the recovered PSK.
Public references consist of a technical disclosure on GitHub Gist, a Full Disclosure mailing list post, and the vendor’s general site; none of the listed sources describe patches, workarounds, or mitigation steps. The associated EPSS score remains flat at 0.0162 with no material increase after publication.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-27883
Vulnerability details
Sensitive data exposure leading to admin/WLAN credential leak in ZTE ZXHN H298A 1.1 and H108N 2.6. A crafted request to the router web interface can expose sensitive device and account information. In affected builds, the response may include the administrator…
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password and WLAN PSK, enabling authentication bypass and network compromise. Some firmware versions may expose only partial identifiers (e.g., serial number, ESSID, MAC addresses).
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Direct exposure of admin/WLAN credentials via crafted web request on public-facing router interface enables T1190 exploitation, T1552 unsecured credential access, and subsequent T1078 account abuse.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Automated marking applies security attributes to system outputs, making it harder for attackers to exploit unmarked sensitive information leading to unauthorized exposure.
Proper attribute retention and permitted-value enforcement limits unauthorized actors from accessing sensitive information lacking correct labels.
Prevents unauthorized exposure of sensitive information by prohibiting untrusted external systems from processing or storing it.
By enforcing authorization matching prior to sharing, the control reduces the risk of exposing sensitive information to unauthorized actors.
Review and removal of nonpublic information from publicly accessible systems directly prevents exposure of sensitive data to unauthorized actors.
Data mining protection mechanisms detect and block unauthorized bulk extraction of sensitive data, directly mitigating exposure to unauthorized actors.
Literacy training teaches users to recognize and avoid actions that result in unauthorized exposure of sensitive information.
Retaining and monitoring training records confirms personnel have completed privacy and security awareness training on handling sensitive data, reducing the chance of unauthorized exposure due to lack of knowledge.