EUVD-2026-42647
GHSA-xcpq-fjmw-996v
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
RTSP is network-reachable with no auth or interaction and a low-complexity crash, but the described impact is availability-only, so C:N/I:N/A:H.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Lifecycle Timeline
3DescriptionCVE.org
A stack-based buffer overflow vulnerability in the RTSP service of Tenda CP3 V3.0 (firmware V31.1.9.91) allows an unauthenticated remote attacker to cause a denial of service via a crafted PLAY request.
AnalysisAI
Denial of service in the Tenda CP3 V3.0 IP camera (firmware V31.1.9.91) allows an unauthenticated remote attacker to crash the RTSP service by sending a crafted PLAY request that overflows a fixed-size stack buffer. The flaw is remotely reachable with no authentication or user interaction, but per the description and CVSS the impact is limited to availability loss (device crash/reboot), with no confirmed code execution. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires network reachability to the RTSP service of a Tenda CP3 V3.0 running firmware V31.1.9.91 - specifically the ability to send an RTSP PLAY request to the camera's RTSP listener (commonly TCP port 554). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H, base 7.5 HIGH) is internally consistent: network-reachable, low complexity, no privileges, and an availability-only impact - this reads as a reliable remote crash rather than a system-compromise bug. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who can reach the camera's RTSP port (for example, an internet-exposed device found via a scan, or an insider on the same LAN) sends a single crafted RTSP PLAY request whose oversized field overflows the stack buffer, crashing the RTSP service and knocking the camera offline or forcing a reboot. Because no authentication or user interaction is needed and complexity is low, the attack is highly reliable and can be scripted to repeatedly deny video availability. … |
| Remediation | No vendor-released patch identified at time of analysis - no Tenda advisory or fixed firmware version was supplied in the source data, so monitor Tenda's official support/download portal for firmware superseding V31.1.9.91 and apply it once released. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Inventory all Tenda CP3 V3.0 devices running firmware V31.1.9.91 and their network locations; assess surveillance coverage gaps. …
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Same weakness CWE-121 – Stack-based Buffer Overflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
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