CVE Explorer
CVE-2026-3841
A command injection vulnerability has been identified in the Telnet command-line interface (CLI) of TP-Link TL-MR6400 v5.3. This issue is caused by insufficient sanitization of data processed during specific CLI operations. An authenticated attacker with elevated privileges may be able to execute arbitrary system commands. Successful exploitation may lead to full device compromise, including potential loss of confidentiality, integrity, and availability.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unaffected","platforms":["Linux"],"product":"TL-MR6400 v5.3","vendor":"TP-Link Systems Inc.","versions":[{"lessThan":"1.9.0 Build 260108","status":"affected","version":"0","versionType":"custom"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:0c4d2804fd5d16e9c2f1b1eb952d0880fbc9e346f7f43ed4217e7ce5bbfb9eaa · sha256:821de12a05e1f142… · /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":8.5,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"HIGH","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:H/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:v2:0c4d2804fd5d16e9c2f1b1eb952d0880fbc9e346f7f43ed4217e7ce5bbfb9eaa · sha256:821de12a05e1f142… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-78","description":"CWE-78 Improper neutralization of special elements used in an OS command ('OS command injection')","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:0c4d2804fd5d16e9c2f1b1eb952d0880fbc9e346f7f43ed4217e7ce5bbfb9eaa · sha256:821de12a05e1f142… · /containers/cna/problemTypes/0/descriptions/0
Source references
2 source assertions{"tags":["patch"],"url":"https://www.tp-link.com/en/support/download/tl-mr6400/v5.30/#Firmware"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:0c4d2804fd5d16e9c2f1b1eb952d0880fbc9e346f7f43ed4217e7ce5bbfb9eaa · sha256:821de12a05e1f142… · /containers/cna/references/0
{"tags":["vendor-advisory"],"url":"https://www.tp-link.com/us/support/faq/5016/"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:0c4d2804fd5d16e9c2f1b1eb952d0880fbc9e346f7f43ed4217e7ce5bbfb9eaa · sha256:821de12a05e1f142… · /containers/cna/references/1
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.