{"id":80567,"date":"2026-06-15T09:46:24","date_gmt":"2026-06-15T06:16:24","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-12220-yealink-sip-t46u-firmware-chunk-upload-handler-accupgradebychunk-mod_upgrade-sparepartsupload-stack-based-overflow\/"},"modified":"2026-06-15T09:46:24","modified_gmt":"2026-06-15T06:16:24","slug":"cve-2026-12220-yealink-sip-t46u-firmware-chunk-upload-handler-accupgradebychunk-mod_upgrade-sparepartsupload-stack-based-overflow","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-12220-yealink-sip-t46u-firmware-chunk-upload-handler-accupgradebychunk-mod_upgrade-sparepartsupload-stack-based-overflow\/","title":{"rendered":"CVE-2026-12220 &#8211; Yealink SIP-T46U Firmware Chunk Upload handler accupgradebychunk mod_upgrade.SparePartsUpload stack-based overflow"},"content":{"rendered":"<p>CVE ID :CVE-2026-12220<\/p>\n<p>  Published : June 15, 2026, 6:16 a.m. | 1\u00a0hour, 41\u00a0minutes ago<\/p>\n<p>  Description :A vulnerability has been found in Yealink SIP-T46U 108.86.0.118. This affects the function mod_upgrade.SparePartsUpload of the file \/api\/upgrade\/accupgradebychunk of the component Firmware Chunk Upload handler. Such manipulation of the argument uid leads to stack-based buffer overflow. The attack can only be initiated within the local network. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.<\/p>\n<p>  Severity: 8.0 | HIGH<\/p>\n<p>  Visit the link for more details, such as CVSS details, affected products, timeline, and more&#8230;\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CVE ID :CVE-2026-12220 Published : June 15, 2026, 6:16 a.m. | 1\u00a0hour, 41\u00a0minutes ago Description :A vulnerability has been found in Yealink SIP-T46U 108.86.0.118. This affects the function mod_upgrade.SparePartsUpload of the file \/api\/upgrade\/accupgradebychunk of the component Firmware Chunk Upload handler. Such manipulation of the argument uid leads to stack-based buffer overflow. The attack can only &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-80567","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/80567","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/comments?post=80567"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/80567\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=80567"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=80567"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=80567"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}