CVE-2026-76870
Netcore NR255-V 1.5.130703 Out-of-Bounds Read in mtd_write Firmware Upload Validation
CVSS 4.0 7.1 HIGHCVSS 3.1 7.1 HIGHCheck source for fixed versionsKEV status unknown
cve-program · CVE-2026-76870
PublishedNetcore NR255-V version 1.5.130703 contains an out-of-bounds read vulnerability in the mtd_write pre-flash validation routine triggered by short firmware uploads. Attackers can upload a truncated firmware image via put_file_cgi.c to trigger out-of-bounds reads across main.c, check_image_uuid.c, and oemMD5Update.c.
Read the publisher's advisoryAffected versions, risk and source history
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CVE-2026-76870 · CVE overview and exploitation status
cve-program · CVE-2026-76870
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