CVE-2026-11834

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.66% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 49.0% of scored records. A rank, not a probability.

NVD base score

8.7 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

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/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

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-06-26.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-06-22 17:53Z2 MO AGO

Last updated

2026-06-26 21:14Z2 MO AGO

Reserved

2026-06-09

Assigning CNA

TPLink

Record state

PUBLISHED

Severity

High (CVSS 8.7)

CNA CVSS vector

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

Weaknesses

• CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')Base

Data version

5.2

Document digest

e66f59b7aec7d24fb07299c63426f3c9a70f41d8272b8102d3a7bf24c584428e

• www.tp-link.comhttps://www.tp-link.com/en/support/download/archer-c20/patch
• www.tp-link.comhttps://www.tp-link.com/en/support/download/archer-mr402/#Firmwarepatch
• www.tp-link.comhttps://www.tp-link.com/en/support/download/archer-mr200/#Firmwarepatch
• www.tp-link.comhttps://www.tp-link.com/en/support/download/tl-mr6400/v7/#Firmwarepatch
• www.tp-link.comhttps://www.tp-link.com/en/support/download/archer-vr2100/#Firmwarepatch
• www.tp-link.comhttps://www.tp-link.com/us/support/download/archer-c20/patch
• www.tp-link.comhttps://www.tp-link.com/us/support/faq/5141/vendor-advisory
• mattg.systemshttps://mattg.systems/posts/cve-2026-11834/