CVE Intelligence
Analysis AI-assisted

CVE-2026-7834: EFM ipTIME NAS1dual Stack-Based Buffer Overflow in misc_main.cgi

CVE-2026-7834 is a stack-based buffer overflow in the get_csrf_whites function of /cgi/advanced/misc_main.cgi in EFM ipTIME NAS1dual 1.5.24, as described by the CNA VulDB. The CNA rates it CVSS 3.1 9.8 (Critical) and states that it can be triggered remotely and that a public exploit has been disclosed. No confirmed exploitation in the wild appears in the sources consulted, and the record lists no affected version ranges or fixes.

Published Oct 13, 2026 · Updated Oct 13, 2026 · Ler em português

Overview

CVE-2026-7834 affects the EFM ipTIME NAS1dual 1.5.24 device. According to the CNA record from VulDB, the flaw is a stack-based buffer overflow in the get_csrf_whites function of /cgi/advanced/misc_main.cgi, classified as CWE-119.

Impact

  • The CNA scores the issue CVSS 3.1 9.8 with vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, which indicates network reachability, no privileges or user interaction required, and high confidentiality, integrity and availability impact.
  • The same CNA also lists CVSS 4.0 8.9 and CVSS 2.0 10 scores.
  • Inference: a memory corruption flaw in a network-facing NAS web interface could allow an attacker to disrupt the device or affect data it stores, but the sources do not describe the concrete consequences.

Affected products and versions

  • The record names EFM ipTIME NAS1dual version 1.5.24.
  • The structured affected and fixes fields are empty, so the full range of affected versions and any fixed version are unknown from the available data.

Exploitation status

  • The CNA states that the exploit has been publicly disclosed and may be used.
  • The vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.
  • No confirmed exploitation in the wild appears in the sources consulted.
  • The EPSS probability is 0.01038 with a percentile of 0.63025 as recorded.

Remediation and mitigation

  • No vendor fix is recorded in the sources. The VulDB entry states the vendor was contacted early and did not respond.
  • Until an official update is confirmed, restrict access to the device management interface to trusted networks and avoid exposing it to the internet.
  • Follow the vendor's and the device owner's internal processes to check for firmware updates and to decide on isolation or replacement if no fix is available.

Detection guidance

  • Review web server and device logs for unusual or repeated requests to /cgi/advanced/misc_main.cgi, especially from unfamiliar sources.
  • Monitor for unexpected device restarts, service crashes or configuration changes on the NAS.
  • Verify network segmentation so that management interfaces are reachable only from administrative hosts.

Limitations of the available information

  • The record gives no vendor advisory, no affected version range beyond 1.5.24, and no fixed version.
  • The exploit referenced by VulDB is not described in the record and its content was not reviewed here.
  • A GitHub repository is listed among the references; its content was not verified for this analysis.
  • The EPSS date field in the record (2026-10-13) is later than the publication date and should be checked against the source.

Frequently asked questions

Is CVE-2026-7834 known to be actively exploited?

The record does not list it in CISA KEV, and no confirmed exploitation in the wild appears in the sources consulted. The CNA does state that a public exploit has been disclosed and may be used.

Which versions are affected?

The record names EFM ipTIME NAS1dual 1.5.24. The structured affected version data is empty, so other versions are unknown.

Is there a fix?

No fix is recorded in the sources. The vendor reportedly did not respond to early contact, so administrators should apply network restrictions and check for official updates.

This analysis was drafted with AI assistance from verified source data and automatically checked against it.