PT-2026-23923 · Wavlink · Wavlink Wl-Wn579X3-C

Ltzhuster + 1 · CVE-2026-3715 · Published 2026-02-20 · Updated 2026-03-13

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Wavlink WL-WN579X3-C versions prior to 20260226

Description A stack-based buffer overflow exists in the function sub 40139C of the file /cgi-bin/firewall.cgi. Manipulation of the del flag argument can trigger this issue, allowing for remote exploitation. The exploit has been made public.

Recommendations Wavlink WL-WN579X3-C versions prior to 20260226 should be upgraded to version 20260226.

Exploit

Fix

Buffer Overflow

Stack Overflow

Weakness Enumeration

CWE-119

CWE-121

Related Identifiers

BDU:2026-09618

CVE-2026-3715

Affected Products

Wavlink Wl-Wn579X3-C

References · 17

• 🔥 https://github.com/Litengzheng/vul_db/blob/main/WL-WN579X3-C/vul_17/README.md · Exploit
• https://osv.dev/vulnerability/CVE-2026-3715 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-3715 · Security Note
• https://bdu.fstec.ru/vul/2026-09618 · Security Note
• https://dl.wavlink.com/firmware/RD/WN579X3C_WAVLINK_V20260226_WO_cb3003b2.bin · Patch
• https://t.me/CVEtracker/46789 · Telegram Post
• https://t.me/cveNotify/154666 · Telegram Post
• https://twitter.com/cyberbivash/status/2030559971562148143 · Twitter Post
• https://twitter.com/CVEnew/status/2030747876578771255 · Twitter Post
• https://vuldb.com/?id.349660 · Note
• https://twitter.com/VulmonFeeds/status/2030557498877374838 · Twitter Post
• https://twitter.com/CveFindCom/status/2030549405447688404 · Twitter Post
• https://twitter.com/TheHackerWire/status/2030557813404217620 · Twitter Post
• https://twitter.com/cracbot/status/2032049082148274182 · Twitter Post
• https://twitter.com/cracbot/status/2032411419485045001 · Twitter Post