CVE-2026-9521

fraillt bitsery std_smart_ptr.h loadFromSharedState improper validation of specified type of input

CVSS 6.3 MEDIUMEPSS 0.4%CWE-1287 CWE-20

Vexday Risk Score

33Atención

Decisión SSVC (CISA)

Attend

PoC disponible → seguir de cerca

CVSS 6.3EPSS 0.4%KEV nãoPoC públicaNuclei —Metasploit —Patch referenciado

Ciclo de vida

26 may 2026Publicada en NVD

Recomendación: Planificar corrección próxima — ya existe PoC pública.

A security vulnerability has been detected in fraillt bitsery up to 5.2.4. Affected is the function loadFromSharedState in the library include/bitsery/ext/std_smart_ptr.h. Such manipulation leads to improper validation of specified type of input. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 5.2.5 is able to address this issue. The name of the patch is 66d16516e24893bebc1c8af52bf2fe9ad0735061. Upgrading the affected component is advised.

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Productos afectados

fraillt · bitsery

PoCs públicas encontradas — 1

cve_referencegist.github.com/TrebledJ/750abc64a826f19dd2d6774724629b71no verificado

⚠ Recursos públicos, para evaluar la exposición de sistemas que controlas o estás autorizado a probar. Prueba solo con autorización.

¿Quieres saber si tu infraestructura está expuesta a esto?

Hablar con TrueHacking →

Referencias

https://gist.github.com/TrebledJ/750abc64a826f19dd2d6774724629b71 https://github.com/fraillt/bitsery/https://github.com/fraillt/bitsery/blob/master/CHANGELOG.md#525-2025-10-09 https://github.com/fraillt/bitsery/commit/66d16516e24893bebc1c8af52bf2fe9ad0735061 https://github.com/fraillt/bitsery/releases/tag/v5.2.5 https://vuldb.com/submit/814457 https://vuldb.com/vuln/365541 https://vuldb.com/vuln/365541/cti