{"id":74126,"date":"2025-11-22T02:45:44","date_gmt":"2025-11-21T23:15:44","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2025-12888-constant-time-issue-with-xtensa-based-esp32-and-x22519\/"},"modified":"2025-11-22T02:45:44","modified_gmt":"2025-11-21T23:15:44","slug":"cve-2025-12888-constant-time-issue-with-xtensa-based-esp32-and-x22519","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2025-12888-constant-time-issue-with-xtensa-based-esp32-and-x22519\/","title":{"rendered":"CVE-2025-12888 &#8211; Constant Time Issue with Xtensa-based ESP32 and X22519"},"content":{"rendered":"<p>CVE ID : CVE-2025-12888<\/p>\n<p>Published :  Nov. 21, 2025, 11:15 p.m. | 2\u00a0hours, 1\u00a0minute ago<\/p>\n<p>Description : Vulnerability in X25519 constant-time cryptographic implementations due to timing side channels introduced by compiler optimizations and CPU architecture limitations, specifically with the Xtensa-based ESP32 chips. If targeting Xtensa it is recommended to use the low memory implementations of X25519, which is now turned on as the default for Xtensa.<\/p>\n<p>Severity: 1.0 | LOW<\/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-2025-12888 Published : Nov. 21, 2025, 11:15 p.m. | 2\u00a0hours, 1\u00a0minute ago Description : Vulnerability in X25519 constant-time cryptographic implementations due to timing side channels introduced by compiler optimizations and CPU architecture limitations, specifically with the Xtensa-based ESP32 chips. If targeting Xtensa it is recommended to use the low memory implementations of &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-74126","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/74126","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=74126"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/74126\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=74126"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=74126"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=74126"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}