CVE-2025-14299 | Improper Content-Length Validation in HTTPS Requests on Tapo C200

The HTTPS server on Tapo C200 V3 does not properly validate the Content-Length header, which can lead to an integer overflow. An unauthenticated attacker on the same local network segment can send crafted HTTPS requests to trigger excessive memory allocation, causing the device to crash and resulting in denial-of-service (DoS).

Published: 2025-12-20 Last update: 2026-01-08 Assigner: f23511db-6c3e-4e32-a477-6aa17d310630 Source: f23511db-6c3e-4e32-a477-6aa17d310630
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-14299 is rated Low Risk (34.9/100): CVSS High severity, with low exploitation likelihood (EPSS 0.06%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-14299

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-12-20 — 0.06% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-14299

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.1 4.0 HIGH
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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 Click to expand
Attack vector (AV:A)
Attacker has to be on an adjacent/local network segment.
Attack complexity (AC:L)
Exploitation conditions are straightforward and stable.
Attack requirements (AT:N)
No additional preconditions are required beyond normal reachability.
Privileges required (PR:N)
No privileges are required.
User interaction (UI:N)
No user interaction is required.
Vulnerable system confidentiality impact (VC:N)
No confidentiality impact on the vulnerable system.
Vulnerable system integrity impact (VI:N)
No integrity impact on the vulnerable system.
Vulnerable system availability impact (VA:H)
High availability impact on the vulnerable system.
Subsequent system confidentiality impact (SC:N)
No confidentiality impact on subsequent systems.
Subsequent system integrity impact (SI:N)
No integrity impact on subsequent systems.
Subsequent system availability impact (SA:N)
No availability impact on subsequent systems.
Exploit maturity (threat) (E:X)
Not defined: no reliable threat intelligence; scoring assumes the worst case (equivalent to Attacked).
Confidentiality requirement (CR:X)
Not defined: insufficient information; scoring treats this like High (worst case).
Integrity requirement (IR:X)
Not defined: insufficient information; scoring treats this like High (worst case).
Availability requirement (AR:X)
Not defined: insufficient information; scoring treats this like High (worst case).
Modified attack vector (MAV:X)
Not defined: scoring uses the Base Attack Vector (AV).
Modified attack complexity (MAC:X)
Not defined: scoring uses the Base Attack Complexity (AC).
Modified attack requirements (MAT:X)
Not defined: scoring uses the Base Attack Requirements (AT).
Modified privileges required (MPR:X)
Not defined: scoring uses the Base Privileges Required (PR).
Modified user interaction (MUI:X)
Not defined: scoring uses the Base User Interaction (UI).
Modified vulnerable system confidentiality impact (MVC:X)
Not defined: scoring uses the Base VC metric.
Modified vulnerable system integrity impact (MVI:X)
Not defined: scoring uses the Base VI metric.
Modified vulnerable system availability impact (MVA:X)
Not defined: scoring uses the Base VA metric.
Modified subsequent system confidentiality impact (MSC:X)
Not defined: scoring uses the Base SC metric.
Modified subsequent system integrity impact (MSI:X)
Not defined: scoring uses the Base SI metric.
Modified subsequent system availability impact (MSA:X)
Not defined: scoring uses the Base SA metric.
Safety (supplemental) (S:X)
Not evaluated.
Automatable (supplemental) (AU:X)
Not evaluated.
Recovery (supplemental) (R:X)
Not evaluated.
Value density (supplemental) (V:X)
Not evaluated.
Vulnerability response effort (supplemental) (RE:X)
Not evaluated.
Provider urgency (supplemental) (U:X)
Not evaluated.
 — — f23511db-6c3e-4e32-a477-6aa17d310630
6.5 3.1 MEDIUM
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:A)
Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 3.6 [email protected]

Weakness enumeration for CVE-2025-14299

Affected software / configurations for CVE-2025-14299

Vendor Product Version Raw CPE
tp-link tapo_c200_firmware 1.3.3 cpe:2.3:o:tp-link:tapo_c200_firmware:1.3.3:build_230228:*:*:*:*:*:*
tp-link tapo_c200_firmware 1.3.4 cpe:2.3:o:tp-link:tapo_c200_firmware:1.3.4:build_230424:*:*:*:*:*:*
tp-link tapo_c200_firmware 1.3.5 cpe:2.3:o:tp-link:tapo_c200_firmware:1.3.5:build_230717:*:*:*:*:*:*
tp-link tapo_c200_firmware 1.3.7 cpe:2.3:o:tp-link:tapo_c200_firmware:1.3.7:build_230920:*:*:*:*:*:*
tp-link tapo_c200_firmware 1.3.9 cpe:2.3:o:tp-link:tapo_c200_firmware:1.3.9:build_231019:*:*:*:*:*:*
tp-link tapo_c200_firmware 1.3.11 cpe:2.3:o:tp-link:tapo_c200_firmware:1.3.11:build_231115:*:*:*:*:*:*
tp-link tapo_c200_firmware 1.3.13 cpe:2.3:o:tp-link:tapo_c200_firmware:1.3.13:build_240327:*:*:*:*:*:*
tp-link tapo_c200_firmware 1.3.14 cpe:2.3:o:tp-link:tapo_c200_firmware:1.3.14:build_240513:*:*:*:*:*:*
tp-link tapo_c200_firmware 1.3.15 cpe:2.3:o:tp-link:tapo_c200_firmware:1.3.15:build_240715:*:*:*:*:*:*
tp-link tapo_c200_firmware 1.4.1 cpe:2.3:o:tp-link:tapo_c200_firmware:1.4.1:build_241212:*:*:*:*:*:*
tp-link tapo_c200_firmware 1.4.2 cpe:2.3:o:tp-link:tapo_c200_firmware:1.4.2:build_250313:*:*:*:*:*:*
tp-link tapo_c200_firmware 1.4.4 cpe:2.3:o:tp-link:tapo_c200_firmware:1.4.4:build_250922:*:*:*:*:*:*

References for CVE-2025-14299

cvelogic Threat Intelligence