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Vulnerabilities

Vulnerability · CVE-2026-2191

A weakness has been identified in Tenda AC9 15.03.06.42_multi.

Published Feb 8, 2026 · catalog updated Feb 23, 2026 · Tenda AC9

Last checked Nov 2, 2026. A connected source was read within the last 7 days.

Check this week

CVE-2026-2191 is not in CISA KEV. FIRST estimates a 77.00% chance of exploitation in the next 30 days. Check whether you run Tenda AC9.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High8.6
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
77.00%
Remediation
Vendor / distro source
Affected products
vendor Tenda AC9 15.03.06.42_multi

A weakness has been identified in Tenda AC9 15.03.06.42_multi. Affected is the function formGetDdosDefenceList. This manipulation of the argument security.ddos.map causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Tenda AC9 15.03.06.42_multi15.03.06.42_multi

How to fix CVE-2026-2191

  • No stored fix

    No vendor fix text is stored. Use the linked advisory before you change production.

  • Version check

    Seen in 15.03.06.42_multi

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2026-2191 is not in CISA KEV. FIRST estimates a 77.00% chance of exploitation in the next 30 days. Check whether you run Tenda AC9.

Which versions are affected?

Compare what you have installed with Tenda AC9 15.03.06.42_multi 15.03.06.42_multi. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 77.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 8, 2026 · EUVD

    Detected

    A weakness has been identified in Tenda AC9 15.03.06.42_multi. Affected is the function formGetDdosDefenceList. This manipulation of the argument security.ddos.map causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks.

  2. Feb 23, 2026 · EUVD

    Updated

    A weakness has been identified in Tenda AC9 15.03.06.42_multi. Affected is the function formGetDdosDefenceList. This manipulation of the argument security.ddos.map causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks.

Sources

  • EUVDVulnerability recordEUVD-2026-6446

    A weakness has been identified in Tenda AC9 15.03.06.42_multi. Affected is the function formGetDdosDefenceList. This manipulation of the argument security.ddos.map causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been made available to the

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Feb 23, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • EUVDNov 2, 2026