CVE Explorer
CVE-2026-34121
An authentication bypass vulnerability within the HTTP handling of the DS configuration service in TP-Link Tapo C520WS v2.6 was identified, due to inconsistent parsing and authorization logic in JSON requests during authentication check. An unauthenticated attacker can append an authentication-exempt action to a request containing privileged DS do actions, bypassing authorization checks.
Successful exploitation allows unauthenticated execution of restricted configuration actions, which may res
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unaffected","product":"Tapo C520WS v2.6","vendor":"TP-Link Systems Inc.","versions":[{"lessThan":"1.2.4 Build 260326 Rel.24666n","status":"affected","version":"0","versionType":"custom"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:f4dd0e189bce3ad3729d78e847b528e901245aedcd4b93b6dfce8c8d5b12811a · sha256:a0a64f0567719671… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"ADJACENT","baseScore":8.7,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":…
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:f4dd0e189bce3ad3729d78e847b528e901245aedcd4b93b6dfce8c8d5b12811a · sha256:a0a64f0567719671… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-287","description":"CWE-287 Improper Authentication","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:f4dd0e189bce3ad3729d78e847b528e901245aedcd4b93b6dfce8c8d5b12811a · sha256:a0a64f0567719671… · /containers/cna/problemTypes/0/descriptions/0
Source references
3 source assertions{"tags":["patch"],"url":"https://www.tp-link.com/en/support/download/tapo-c520ws/#Firmware-Release-Notes"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:f4dd0e189bce3ad3729d78e847b528e901245aedcd4b93b6dfce8c8d5b12811a · sha256:a0a64f0567719671… · /containers/cna/references/1
{"tags":["patch"],"url":"https://www.tp-link.com/us/support/download/tapo-c520ws/#Firmware-Release-Notes"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:f4dd0e189bce3ad3729d78e847b528e901245aedcd4b93b6dfce8c8d5b12811a · sha256:a0a64f0567719671… · /containers/cna/references/0
{"tags":["vendor-advisory"],"url":"https://www.tp-link.com/us/support/faq/5047/"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:f4dd0e189bce3ad3729d78e847b528e901245aedcd4b93b6dfce8c8d5b12811a · sha256:a0a64f0567719671… · /containers/cna/references/2
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.