CVE Watch23 de out. de 2026

CVE-2026-53920

odhcpd is the DHCPv6, DHCPv4, and router-advertisement server used by OpenWrt. From version 17.01.0 to before version 25.12.3, odhcpd's DHCP

CVSS

—

Sem CVSS

EPSS

0.4%

p34

KEV

—

Exploit Today

0-100

Publicado: 23 de out. de 2026 · Última mod.: 23 de out. de 2026 · CWE-125 · CWE-126 · CWE-200

EPSS · 30d

0.4%EPSS · 30 dias0.4%

2026-10-252026-11-05

Descrição técnica

odhcpd is the DHCPv6, DHCPv4, and router-advertisement server used by OpenWrt. From version 17.01.0 to before version 25.12.3, odhcpd's DHCPv6 IA parser accepts an IA_NA or IA_PD option whose body is shorter than struct dhcpv6_ia_hdr, casts the option header to that full structure, and reads ia->iaid before proving that the IA body contains the IAID field. If an unauthenticated network-adjacent client places a zero-length or otherwise short IA option at the end of odhcpd's 8192-byte receive stack buffer, the IAID read crosses from data_buf into adjacent stack memory. The disclosed bytes are then reflected in the DHCPv6 reply IAID; prior ARM validation showed data_buf[8192:8196] disclosing the saved stack canary, and wider stack scans can leak ASLR-useful stack/process contents. This issue has been patched in version 25.12.3.

Referências oficiais

CVEs relacionados

CVECVSSEPSSKEVRExploitTítuloMod.

CVE-2026-351134.8 MÉD

—

———HCL AION is affected by a vulnerability where the Cross-Origin-Opener-Policy (COOP) header was missing or insecure, allowing cross-origin documents to share a browsing context with the application. This may enable cross-window attacks, potentially resulting in unintended behavior or security impact under certain conditions.3h CVE-2026-351124.2 MÉD

—

———HCL AION is affected by a vulnerability where the Cross-Origin-Embedder-Policy (COEP) header was missing or insecure, so embedded cross-origin resources were not required to explicitly grant permission. This weakens cross-origin isolation, potentially resulting in unintended behavior or security impact under certain conditions.3h CVE-2026-351114.8 MÉD

—

———HCL AION is affected by a vulnerability where the Cross-Origin-Resource-Policy (CORP) header was missing or insecure, allowing application resources to be loaded by other origins. This may expose resources to cross-origin data leakage, potentially resulting in unintended behavior or security impact under certain conditions.3h CVE-2026-351153.7 BAI

—

———HCL AION is affected by a vulnerability where the HTTP Strict-Transport-Security (HSTS) header was missing or insecurely configured, so browsers were not instructed to always use HTTPS. This may allow connections to be downgraded or intercepted, potentially resulting in unintended behavior or security impact under certain conditions.4h CVE-2026-351143.7 BAI

—

———HCL AION is affected by a vulnerability where the X-Content-Type-Options header was missing or insecure, allowing browsers to MIME-sniff responses. This may cause content to be interpreted as an unintended type, potentially resulting in unintended behavior or security impact under certain conditions.4h CVE-2026-1232905.3 MÉD

—

———In JetBrains Datalore before 2026.4 hidden notebook code was exposed to unauthenticated users via the public interactive report content endpoint6h