CVE-2026-123958
A vulnerability was identified in TOTOLINK CA300-PoE 6.2c.884. The affected element is the function setLanConfig of the file /cgi-bin/cstecg
CVSS
9.9
Critical
EPSS
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KEV
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Exploit Today
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0-100
Published: Nov 7, 2026 · Last modified: Nov 7, 2026 · CWE-119 · CWE-120
Not enough EPSS history yet.
A vulnerability was identified in TOTOLINK CA300-PoE 6.2c.884. The affected element is the function setLanConfig of the file /cgi-bin/cstecgi.cgi. Such manipulation of the argument lanDns/lanSecDns/langType leads to buffer overflow. It is possible to launch the attack remotely. The exploit is publicly available and might be used.
- lavender-bicycle-a5a.notion.sitehttps://lavender-bicycle-a5a.notion.site/TOTOLINK-CA300-PoE-setLanConfig-3f953a41781f8029941cd21d2cc16db0?source=copy_link
- vuldb.comhttps://vuldb.com/cve/CVE-2026-123958
- vuldb.comhttps://vuldb.com/submit/1033673
- vuldb.comhttps://vuldb.com/vuln/432021
- vuldb.comhttps://vuldb.com/vuln/432021/cti
- www.totolink.nethttps://www.totolink.net/
CVECVSSEPSSKEVRExploitTitleMod.
CVE-2026-12396610.0 CRI—
———A vulnerability was determined in Tenda AC19 16.03.10.07. Affected by this issue is the function saveParentControlInfo of the file /goform/saveParentControlInfo. This manipulation of the argument deviceId causes heap-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been publicly disclosed and may be utilized.2hCVE-2026-1239619.9 CRI—
———A security vulnerability has been detected in TOTOLINK CA300-PoE 6.2c.884. This impacts the function setWiFiBasicConfig of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument KeyStr leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used.5hCVE-2026-1239609.9 CRI—
———A weakness has been identified in TOTOLINK CA300-PoE 6.2c.884. This affects the function setWanConfig of the file /cgi-bin/cstecgi.cgi. Executing a manipulation of the argument pppoeUser/priDns/secDns can lead to buffer overflow. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks.6hCVE-2026-1239599.1 CRI—
———A security flaw has been discovered in TOTOLINK CA300-PoE 6.2c.884. The impacted element is the function setLanguageCfg of the file /cgi-bin/cstecgi.cgi. Performing a manipulation of the argument langType results in buffer overflow. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks.6hCVE-2026-1239579.9 CRI—
———A vulnerability was determined in TOTOLINK CA300-PoE 6.2c.884. Impacted is the function setIpQosRules of the file /cgi-bin/cstecgi.cgi. This manipulation of the argument ipStart causes buffer overflow. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized.7hCVE-2026-1232693.3 LOW1.4%
——0A vulnerability was detected in libyal libvmdk. Affected by this vulnerability is the function libvmdk_descriptor_file_read_header of the file libvmdk/libvmdk_descriptor_file.c of the component Descriptor File Parser. The manipulation results in out-of-bounds read. The attack must be initiated from a local position. The exploit is now public and may be used. The patch is identified as 175d3fc0a0b961f362f16e7560a6169d7213e16b. It is best practice to apply a patch to resolve this issue.22h