What is CVE-2026-7834?

CVE-2026-7834 is a critical-severity vulnerability in Efm Iptime Nas1dual, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2026-05-05.

How severe is CVE-2026-7834?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Efm Iptime Nas1dual

CVE-2026-7834

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 la…

Vulnerability class: Buffer Overflow

EPSS: 0.001 (17.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Efm Iptime Nas1dual — versions 1.5.24

Weakness classification (CWE)

References

cna@vuldb.com (exploit)
Submit #807787 | iptime nas1dual 1.5.24 Stack Overflow (third-party-advisory)
VDB-361113 | EFM ipTIME NAS1dual misc_main.cgi get_csrf_whites stack-based overflow (technical-description, vdb-entry)
VDB-361113 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)

Frequently asked questions

What is CVE-2026-7834?: CVE-2026-7834 is a critical-severity vulnerability in Efm Iptime Nas1dual, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2026-05-05.
How severe is CVE-2026-7834?: Critical severity. CVSS v3 base score is 9.8 out of 10.