CVE Explorer
CVE-2026-5039
TP-Link TL-WR841N v13 uses DES-CBC encryption in the TDDPv2 debug protocol with a cryptographic key derived from default web management credentials, making the key predictable if device is left in default configuration. A network-adjacent attacker can exploit this weakness to gain unauthorized access to the protocol, read debug data, modify certain device configuration values, and trigger device reboot, resulting in loss of integrity and a denial-of-service condition.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unaffected","product":"TL-WL841N v13","vendor":"TP-Link Systems Inc.","versions":[{"lessThan":"0.9.1 Build 20231120 Rel.62366","status":"affected","version":"0","versionType":"custom"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:b493a92e9116f197ea4f3c7390f18cff817ade530d5c43a51d1a44df8cdb0f6b · sha256:022a019bd5ad9bea… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"ADJACENT","baseScore":6.1,"baseSeverity":"MEDIUM","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:P/PR:N/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImp…
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:b493a92e9116f197ea4f3c7390f18cff817ade530d5c43a51d1a44df8cdb0f6b · sha256:022a019bd5ad9bea… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-1394","description":"CWE-1394 Use of default cryptographic key","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:b493a92e9116f197ea4f3c7390f18cff817ade530d5c43a51d1a44df8cdb0f6b · sha256:022a019bd5ad9bea… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"tags":["patch"],"url":"https://www.tp-link.com/us/support/download/tl-wr841n/v13/#Firmware"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:b493a92e9116f197ea4f3c7390f18cff817ade530d5c43a51d1a44df8cdb0f6b · sha256:022a019bd5ad9bea… · /containers/cna/references/0
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.