CVE-2026-22904

Stack Overflow via Oversized Cookie Fields in lighttpd

Improper length handling when parsing multiple cookie fields (including TRACKID) allows an unauthenticated remote attacker to send oversized cookie values and trigger a stack buffer overflow, resulting in a denial‑of‑service condition and possible remote code execution.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed

Vendors

Wago

Products

0852-1322 0852-1328

CVE-2026-39853

osslsigncode has a Stack Buffer Overflow via Unbounded Digest Copy During Signature Verification

osslsigncode is a tool that implements Authenticode signing and timestamping. Prior to 2.12, A stack buffer overflow vulnerability exists in osslsigncode in several signature verification paths. During verification of a PKCS#7 signature, the code copies the digest value from a parsed SpcIndirectDataContent structure into a fixed-size stack buffer (mdbuf[EVP_MAX_MD_SIZE], 64 bytes) without validating that the source length fits within the destination buffer. This pattern is present in the verification handlers for PE, MSI, CAB, and script files. An attacker can craft a malicious signed file with an oversized digest field in SpcIndirectDataContent. When a user verifies such a file with osslsigncode verify, the unbounded memcpy can overflow the stack buffer and corrupt adjacent stack state. This vulnerability is fixed in 2.12.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Mtrojnar Osslsigncode Project

Products

Osslsigncode Osslsigncode

CVE-2026-26269

Vim has a Netbeans specialKeys Stack Buffer Overflow

Vim is an open source, command line text editor. Prior to 9.1.2148, a stack buffer overflow vulnerability exists in Vim's NetBeans integration when processing the specialKeys command, affecting Vim builds that enable and use the NetBeans feature. The Stack buffer overflow exists in special_keys() (in src/netbeans.c). The while (*tok) loop writes two bytes per iteration into a 64-byte stack buffer (keybuf) with no bounds check. A malicious NetBeans server can overflow keybuf with a single specialKeys command. The issue has been fixed as of Vim patch v9.1.2148.

CVSS 3.1 · 5.4 Medium EPSS < 1% KEV · Not listed

Vendors

Vim

Products

Vim

CVE-2026-2566

Wavlink WL-NU516U1 adm.cgi sub_406194 stack-based overflow

A security vulnerability has been detected in Wavlink WL-NU516U1 up to 130/260. This affects the function sub_406194 of the file /cgi-bin/adm.cgi. Such manipulation of the argument firmware_url leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS 4.0 · 8.6 High EPSS < 1% KEV · Not listed

Vendors

Wavlink

Products

Wl-nu516u1 Wl-nu516u1 Firmware

CVE-2026-2567

Wavlink WL-NU516U1 nas.cgi sub_401218 stack-based overflow

A vulnerability was detected in Wavlink WL-NU516U1 20251208. This vulnerability affects the function sub_401218 of the file /cgi-bin/nas.cgi. Performing a manipulation of the argument User1Passwd results in stack-based buffer overflow. The attack may be initiated remotely. The exploit is now public and may be used.

CVSS 4.0 · 8.6 High EPSS < 1% KEV · Not listed

Vendors

Wavlink

Products

Wl-nu516u1 Wl-nu516u1 Firmware

CVE-2026-26736

Stack‑Based Buffer Overflow in TOTOLINK A3002RU_V3 IPv6 Setup

TOTOLINK A3002RU_V3 V3.0.0-B20220304.1804 was discovered to contain a stack-based buffer overflow via the static_ipv6 parameter in the formIpv6Setup function.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed

Vendors

Totolink

Products

A3002ru-v3 A3002ru Firmware

CVE-2026-2329

Grandstream GXP1600 VoIP Phones - Unauthenticated stack buffer overflow

An unauthenticated stack-based buffer overflow vulnerability exists in the HTTP API endpoint /cgi-bin/api.values.get. A remote attacker can leverage this vulnerability to achieve unauthenticated remote code execution (RCE) with root privileges on a target device. The vulnerability affects all six device models in the series: GXP1610, GXP1615, GXP1620, GXP1625, GXP1628, and GXP1630.

CVSS 4.0 · 9.3 Critical EPSS 41.7% KEV · Not listed

Vendors

Grandstream

Products

Gxp1610 Gxp1610 Firmware Gxp1615 and 9 more

CVE-2026-2853

D-Link DWR-M960 System Log Configuration Endpoint formSysLog sub_462E14 stack-based overflow

A vulnerability was detected in D-Link DWR-M960 1.01.07. This affects the function sub_462E14 of the file /boafrm/formSysLog of the component System Log Configuration Endpoint. Performing a manipulation of the argument submit-url results in stack-based buffer overflow. The attack can be initiated remotely. The exploit is now public and may be used.

CVSS 4.0 · 8.7 High EPSS 1.0% KEV · Not listed

Vendors

D-link Dlink

Products

Dwr-m960 Dwr-m960 Dwr-m960 Firmware

CVE-2026-2855

D-Link DWR-M960 DDNS Settings formDdns sub_4648F0 stack-based overflow

A vulnerability has been found in D-Link DWR-M960 1.01.07. Affected is the function sub_4648F0 of the file /boafrm/formDdns of the component DDNS Settings Handler. The manipulation of the argument submit-url leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Vendors

D-link Dlink

Products

Dwr-m960 Dwr-m960 Dwr-m960 Firmware

CVE-2026-2856

D-Link DWR-M960 Filter Configuration Endpoint formFilter sub_424AFC stack-based overflow

A vulnerability was found in D-Link DWR-M960 1.01.07. Affected by this vulnerability is the function sub_424AFC of the file /boafrm/formFilter of the component Filter Configuration Endpoint. The manipulation of the argument submit-url results in stack-based buffer overflow. The attack may be launched remotely. The exploit has been made public and could be used.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Vendors

D-link Dlink

Products

Dwr-m960 Dwr-m960 Dwr-m960 Firmware

CVE-2026-2870

Tenda A21 formSetQosBand set_qosMib_list stack-based overflow

A security flaw has been discovered in Tenda A21 1.0.0.0. Affected by this issue is the function set_qosMib_list of the file /goform/formSetQosBand. The manipulation of the argument list results in stack-based buffer overflow. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Vendors

Tenda

Products

A21 A21 Firmware

CVE-2026-2871

Tenda A21 SetIpMacBind fromSetIpMacBind stack-based overflow

A weakness has been identified in Tenda A21 1.0.0.0. This affects the function fromSetIpMacBind of the file /goform/SetIpMacBind. This manipulation of the argument list causes stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Vendors

Tenda

Products

A21 A21 Firmware

CVE-2026-2872

Tenda A21 MAC Filtering Configuration Endpoint setBlackRule set_device_name stack-based overflow

A security vulnerability has been detected in Tenda A21 1.0.0.0. This vulnerability affects the function set_device_name of the file /goform/setBlackRule of the component MAC Filtering Configuration Endpoint. Such manipulation of the argument devName/mac leads to stack-based buffer overflow. The attack may be performed from remote. The exploit has been disclosed publicly and may be used.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Vendors

Tenda

Products

A21 A21 Firmware

CVE-2026-2873

Tenda A21 openSchedWifi setSchedWifi stack-based overflow

A vulnerability was detected in Tenda A21 1.0.0.0. This issue affects the function setSchedWifi of the file /goform/openSchedWifi. Performing a manipulation of the argument schedStartTime/schedEndTime results in stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit is now public and may be used.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Vendors

Tenda

Products

A21 A21 Firmware

CVE-2026-2876

Tenda A18 setBlackRule parse_macfilter_rule stack-based overflow

A vulnerability was determined in Tenda A18 15.13.07.13. This affects the function parse_macfilter_rule of the file /goform/setBlackRule. This manipulation of the argument deviceList causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been publicly disclosed and may be utilized.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Vendors

Tenda

Products

A18 A18 Firmware

CVE-2026-2883

D-Link DWR-M960 formIpQoS sub_427D74 stack-based overflow

A vulnerability was determined in D-Link DWR-M960 1.01.07. Impacted is the function sub_427D74 of the file /boafrm/formIpQoS. Executing a manipulation of the argument submit-url can lead to stack-based buffer overflow. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Vendors

D-link Dlink

Products

Dwr-m960 Dwr-m960 Dwr-m960 Firmware

CVE-2026-2885

D-Link DWR-M960 formIpv6Setup sub_469104 stack-based overflow

A security flaw has been discovered in D-Link DWR-M960 1.01.07. The impacted element is the function sub_469104 of the file /boafrm/formIpv6Setup. The manipulation of the argument submit-url results in stack-based buffer overflow. The attack may be performed from remote. The exploit has been released to the public and may be used for attacks.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Vendors

D-link Dlink

Products

Dwr-m960 Dwr-m960 Dwr-m960 Firmware

CVE-2026-2886

Tenda A21 SetOnlineDevName set_device_name stack-based overflow

A weakness has been identified in Tenda A21 1.0.0.0. This affects the function set_device_name of the file /goform/SetOnlineDevName. This manipulation of the argument devName causes stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Vendors

Tenda

Products

A21 A21 Firmware

CVE-2026-2905

Tenda HG9 Wireless Configuration Endpoint formWlanSetup stack-based overflow

A vulnerability was identified in Tenda HG9 300001138. This impacts an unknown function of the file /boaform/formWlanSetup of the component Wireless Configuration Endpoint. The manipulation of the argument ssid leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit is publicly available and might be used.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Vendors

Tenda

Products

Hg9 Hg9 Firmware

CVE-2026-2906

Tenda HG9 Samba Configuration Endpoint formSamba stack-based overflow

A security flaw has been discovered in Tenda HG9 300001138. Affected is an unknown function of the file /boaform/formSamba of the component Samba Configuration Endpoint. The manipulation of the argument sambaCap results in stack-based buffer overflow. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Vendors

Tenda

Products

Hg9 Hg9 Firmware