EUVD-2026-42648
GHSA-9ppp-4252-fggq
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Unauthenticated remote TEARDOWN request over RTSP with low complexity (AV:N/AC:L/PR:N/UI:N); impact is device crash only, so C:N/I:N and 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 V31.1.9.991) allows an unauthenticated remote attacker to cause a denial of service via a crafted TEARDOWN request.
AnalysisAI
Remote denial of service in the Tenda CP3 V3.0 IP camera (firmware V31.1.9.991) allows an unauthenticated attacker on the network to crash the device by sending a specially crafted RTSP TEARDOWN request that overflows a stack buffer. Publicly available exploit code exists via a third-party GitHub write-up, though the flaw affects only availability (no data disclosure or code execution is claimed). …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires only network reachability to the Tenda CP3's RTSP service (typically TCP/554) on firmware V31.1.9.991 - no authentication, no user interaction, and no special configuration are needed, consistent with AV:N/AC:L/PR:N/UI:N. … 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) describes an easily reachable, unauthenticated network attack with impact limited strictly to availability, yielding a base score of 7.5 (High). … 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 over the network sends a crafted TEARDOWN request containing an oversized field, overflowing a stack buffer and crashing the RTSP service. This knocks the camera offline, disabling video streaming and potentially creating a surveillance blind spot; a public proof-of-concept exists, and because no authentication is required, the attack can be scripted and repeated to keep the device down. |
| Remediation | No vendor-released patch identified at time of analysis - no Tenda advisory or fixed firmware version appears in the provided data, so a specific upgrade target cannot be cited. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Audit network inventory for affected Tenda CP3 cameras; restrict RTSP protocol access via firewall rules to only trusted administrative networks. …
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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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