CVE-2026-76852Netcore NR268 1.7.121109 Forgeable Firmware Authenticity Check in mtd_write
Updated under an hour ago ()
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It affects Netcore NR268. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Netcore NR268 firmware version 1.7.121109 has an improper integrity verification flaw in mtd_write allowing forged firmware authenticity checks. Attackers can exploit put_file.cgi and check_image_uuid.c to bypass firmware signature validation and load unauthorized firmware images.
- CVSS
- 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-354
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Sep 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Netcore NR268 netcore:nr268 (from the name) | 1.7.121109 | CNA record |
References
- https://github.com/draw-ctf/netcore-router-public-refs/blob/main/2026.08.19-netcore-nr268-firmware-forgery.mdthird-party-advisory
- https://www.vulncheck.com/advisories/netcore-nr268-1.7.121109-forgeable-firmware-authenticity-check-in-mtd-writethird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.