Security readout for executives and security teams
Plain-English summary
Two end-of-life TP-Link router models have an authenticated command-injection flaw in the Parental Control page. A privileged user could run operating-system commands on the router. CISA KEV indicates known exploitation, so remaining devices should be treated as urgent replacement or patch candidates.
Executive priority
Prioritize within active vulnerability remediation because affected devices are EOL and CISA lists the CVE as known exploited. Replacement is the durable control; patching is a short-term option only where TP-Link provides model-specific updates.
Technical view
CVE-2025-9377 is CWE-78 authenticated RCE affecting Archer C7(EU) V2 and TL-WR841N/ND(MS) V9 before 241108. CVSS 4.0 is 8.6: network attack vector, low complexity, high privileges, no user interaction, and high device confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to the named TP-Link models and versions before 241108, based on supplied sources. Risk is highest where these EOL routers remain in service and administrative access is reachable by untrusted or compromised privileged users.
Exploitation context
CISA KEV supports known exploitation in the wild. The supplied sources do not identify threat actors, exploit tooling, payloads, or whether exploitation requires Internet-exposed management. CVSS indicates high privileges are required.
Researcher notes
Evidence supports authenticated command injection on the Parental Control page, but the bundle lacks root-cause detail, vulnerable parameter names, or exploit conditions beyond CVSS. Do not generalize to other TP-Link models without vendor confirmation.
Mitigation direction
- Replace affected EOL routers with currently supported models where feasible.
- If replacement is delayed, install vendor-provided patches from TP-Link FAQ 4308.
- Restrict router administrative access to trusted management networks only.
- Review privileged router accounts and remove unused or shared credentials.
- Monitor TP-Link guidance for any revised firmware or replacement instructions.
Validation and detection
- Inventory for Archer C7(EU) V2 and TL-WR841N/ND(MS) V9 devices.
- Confirm firmware build is 241108 or later, or document replacement status.
- Check whether router management interfaces are reachable from untrusted networks.
- Review admin account list for unnecessary privileged users.
- Validate patch source and model match before applying firmware.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-78: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2025-9377 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.6 (4.0)
- Known Exploited
- Yes
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
8.6HighVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.tp-link.com/us/support/faq/4365/CVE reference · vendor-advisory
- https://www.tp-link.com/us/support/faq/4308/CVE reference · patch, vendor-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-9377CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.