CVE-2026-7834

EFM ipTIME NAS1dual misc_main.cgi get_csrf_whites stack-based overflow

View on CVE.org
Published May 5, 2026 CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed
Description
A security vulnerability has been detected in EFM ipTIME NAS1dual 1.5.24. This issue affects the function get_csrf_whites of the file /cgi/advanced/misc_main.cgi. Such manipulation leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Analysis

AI-generated

Technical impact

The flaw resides in the get_csrf_whites function of /cgi/advanced/misc_main.cgi in the EFM ipTIME NAS1dual firmware version 1.5.24. Manipulating the request to this function causes a stack‑based buffer overflow. Such an overflow could enable an attacker to overwrite return addresses and execute arbitrary code, or to trigger a crash that disrupts service. The vulnerability is triggered remotely, so any host with network reachability to the NAS is a potential target.

Affected Systems

The affected device is the EFM ipTIME NAS1dual running firmware 1.5.24. No other versions or products are listed as affected in the current CNA data.

Risk and Exploitability

The CVSS score of 9.3 signals a critical severity. EPSS data is not available, but the vulnerability has been publicly disclosed and can be exploited remotely. The defect is not included in the CISA KEV catalog yet, but the existence of a public exploit indicates a realistic risk. Attackers can target the NAS through the exposed /cgi/advanced/misc_main.cgi endpoint, and without an official fix the exposure remains high.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Limit or block external access to the NAS, allowing only trusted networks or IP addresses to reach the /cgi/advanced/misc_main.cgi endpoint.
  • Enable comprehensive logging on the NAS and monitor for anomalous CGI requests, repeated failures, or patterns that suggest an attempted buffer‑overflow attack.
  • Check the vendor’s website or support channels for firmware updates that address this issue; if a patch is released, apply it promptly.

Generated by OpenCVE AI on May 5, 2026 at 16:20 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Iptime
Iptime nas1dual
Vendors & Products Iptime
Iptime nas1dual
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}
Type Values Removed Values Added
Description A security vulnerability has been detected in EFM ipTIME NAS1dual 1.5.24. This issue affects the function get_csrf_whites of the file /cgi/advanced/misc_main.cgi. Such manipulation leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Title EFM ipTIME NAS1dual misc_main.cgi get_csrf_whites stack-based overflow
Weaknesses CWE-119
CWE-121
References
Metrics cvssV2_0

{'score': 10, 'vector': 'AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 9.8, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R'}

cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P'}
Weaknesses
  • CWE-119

    Improper Restriction of Operations within the Bounds of a Memory Buffer

  • CWE-121

    Stack-based Buffer Overflow

Sources

Status
PUBLISHED
Assigner
VulDB
Published
Updated
May 5, 2026, 3:02 PM
Reserved
May 5, 2026, 6:33 AM

View source JSON

Updated
May 5, 2026, 3:02 PM

JSON

Status
Deferred
Published
May 5, 2026, 2:16 PM
Modified
Oct 26, 2026, 7:10 PM

View source JSON

No data.

Updated
May 5, 2026, 9:30 PM

JSON