EUVD-2026-77223
GHSA-285c-6p9m-6x4p
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-reachable web service, low complexity exploit; PR:L required per vendor CVSS; no scope change; full C/I/A impact from arbitrary code execution.
Primary rating from Vendor (jpcert).
CVSS VectorVendor: jpcert
Lifecycle Timeline
4DescriptionCVE.org
Buffer overflow vulnerability exists in Contec RP-WAH-SR Series. If a remote attacker sends a specially crafted request to the product's web service, an arbitrary program may be executed.
AnalysisAI
Remote code execution is possible in Contec RP-WAH-SR Series wireless access point devices via a classic buffer overflow in the product's web service. A low-privileged remote attacker can send a specially crafted HTTP request to trigger the overflow and execute arbitrary code on the device. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires network access to the target device's web service (HTTP/HTTPS management interface) and a valid low-privilege account on that service (PR:L per CVSS 4.0 vector). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H) scores 8.7, reflecting network-accessible exploitation with low privilege requirements and full impact to confidentiality, integrity, and availability of the vulnerable system. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the firmware update or patch documented in the Contec security advisory at https://www.contec.com/api/downloadlogger?download=/-/media/Contec/support/security-info/2026/contec_security_fl_26091000_en.pdf and the JVN advisory at https://jvn.jp/en/vu/JVNVU99009004/. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Conduct a complete inventory of all Contec RP-WAH-SR Series devices (SR1, SR2, SR12, SR22 variants) currently deployed, document their network location and criticality, and contact Contec support and JPCERT for guidance; isolate any internet-exposed administrative interfaces immediately. …
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More in Rp Wah Sr1
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Cross-site scripting in the Contec RP-WAH-SR Series web management interface allows an authenticated low-privilege attac
Same weakness CWE-120 – Classic Buffer Overflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
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