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CVE Record

CVE-2022-40864: Tenda AC15 and AC18 routers V15.03.05.19 contain stack overflow vulnerabilities in the function setSmartPow...

Tenda AC15 and AC18 routers V15.03.05.19 contain stack overflow vulnerabilities in the function setSmartPowerManagement with the request /goform/PowerSaveSet

CriticalCVSS 9.8Not KEV-listedUpdated
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Glexia's TakeAutomated analysiscritical

Security readout for executives and security teams

Plain-English summary

This CVE affects Tenda AC15 and AC18 routers running firmware V15.03.05.19. The reported flaw is a stack overflow in the power-saving settings handler. Because the CVSS vector indicates network access, no login, and full confidentiality, integrity, and availability impact, exposed devices should be treated as urgent infrastructure risk.

Executive priority

Prioritize remediation for internet-facing or remote-site routers first. A compromised edge router can disrupt connectivity, expose traffic, and provide an attacker a foothold. The absence of confirmed vendor fix details means leadership should drive rapid inventory, exposure reduction, and replacement decisions where needed.

Technical view

The CVE describes CWE-787 out-of-bounds write/stack overflow in setSmartPowerManagement, associated with the /goform/PowerSaveSet request path. CVSS 3.1 is 9.8 with AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. The source bundle does not provide a confirmed vendor advisory or fixed firmware version.

Likely exposure

Organizations are exposed if Tenda AC15 or AC18 routers on firmware V15.03.05.19 are deployed, especially where management services are reachable from untrusted networks. The CVE record’s affected CPE fields are incomplete, so validation should rely on model and firmware inventory.

Exploitation context

The supplied sources include public vulnerability writeups, but the CVE is not listed as KEV in the bundle and no cited source confirms active exploitation. Treat public technical disclosure as increasing risk, without claiming exploitation in the wild.

Researcher notes

The public record ties the issue to setSmartPowerManagement and /goform/PowerSaveSet on AC15 and AC18 firmware V15.03.05.19. Formal affected-product metadata is sparse, and the bundle does not confirm patch availability, exploit-in-the-wild status, or broader version impact.

Mitigation direction

  • Identify all Tenda AC15 and AC18 routers in the environment.
  • Check vendor guidance for fixed firmware or official mitigation.
  • Restrict router management access to trusted administrative networks only.
  • Disable internet-facing administration if enabled and operationally possible.
  • Replace unsupported devices if no vendor fix is available.

Validation and detection

  • Verify each device model and firmware version from trusted inventory or admin records.
  • Confirm whether any AC15 or AC18 device runs V15.03.05.19.
  • Check that management interfaces are not reachable from the public internet.
  • Review logs for unusual requests referencing /goform/PowerSaveSet.
  • Document remediation status for every affected router.
Prepared
Confidence
medium
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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 · low confidence lookup

CWE-787: Exact CWE lookup

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cve · low confidence lookup

CVE-2022-40864 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Critical
CVSS
9.8 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Official CVE source material

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.

1CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
9.8CVSS 3.1CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

9.8Critical
CVSS 3.1 vector shape for CVE-2022-40864Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

CWE-787

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.