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CVE Record

CVE-2026-78167: EFM ipTIME T16000M Session Validation httpcon_check_session_url improper authentication

A weakness has been identified in EFM ipTIME T16000M 14.20.2. The impacted element is the function httpcon_check_session_url of the component Session Validation Handler. This manipulation causes improper authentication. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

CriticalCVSS 10Not KEV-listedUpdated
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Glexia's TakeAutomated analysiscritical

Security readout for executives and security teams

Plain-English summary

EFM ipTIME T16000M firmware 14.20.2 contains an authentication weakness in HTTP session validation. A remote, unauthenticated attacker may bypass intended access controls, potentially exposing device and connected-network operations. Public exploit material increases urgency, but the supplied sources do not document confirmed attacks in the wild.

Executive priority

Treat internet-reachable version 14.20.2 devices as an immediate containment priority. Public exploit availability and maximum severity justify rapid exposure reduction. Do not assume a firmware fix exists: the supplied sources report no vendor response or confirmed patch.

Technical view

CVE-2026-78167 is a CWE-287 improper-authentication flaw in httpcon_check_session_url within the Session Validation Handler. The supplied CVSS 4.0 score is 10.0, reflecting remote, low-complexity, unauthenticated impact across confidentiality, integrity, and availability. Related submissions allege password reset and code-execution consequences, but those outcomes lack vendor confirmation in the bundle.

Likely exposure

Confirmed scope is limited to EFM ipTIME T16000M version 14.20.2. Devices exposing the affected HTTP service to the internet or untrusted networks face the greatest risk. The bundle does not establish whether earlier or later versions are affected.

Exploitation context

Exploit material is publicly available, so practical attack development may require less effort. However, the supplied KEV indicator is false and no cited source confirms active exploitation. Absence from KEV does not prove exploitation is not occurring.

Researcher notes

The core supported finding is remote improper authentication in HTTP session validation. Separate submissions describe arbitrary password reset and remote code execution, but the bundle does not provide vendor validation or sufficient evidence to treat both as confirmed outcomes. Avoid testing production devices with public exploit material.

Mitigation direction

  • Identify and prioritize all EFM ipTIME T16000M devices running version 14.20.2.
  • Remove affected HTTP services from internet exposure and restrict access to trusted administrative networks.
  • Apply vendor-recommended firmware or mitigation when authoritative guidance becomes available.
  • If exposure cannot be reduced, consider isolating or temporarily replacing the affected device.
  • Monitor vendor and CVE sources because the bundle names no confirmed patch.

Validation and detection

  • Verify the exact hardware model and installed firmware version through trusted inventory or local administration.
  • Confirm whether the affected HTTP service is reachable from internet or untrusted network segments.
  • Review authentication, configuration-change, password-reset, and restart logs for unexplained activity.
  • Check device integrity and credentials after any suspected unauthorized access.
  • Reassess affected-version scope and remediation status against new vendor guidance.
Prepared
Confidence
medium
Sources
6

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 · medium confidence lookup

CWE-287: Credential and account abuse lookup

Authentication and credential weaknesses can make valid-account abuse and credential telemetry useful review starting points. 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.

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cve · low confidence lookup

CVE-2026-78167 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
10 (4.0)
Known Exploited
No
Published

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P

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.

4CVSS vectors
6Timeline events
1ADP providers
8Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: pocAutomatable: yesTechnical Impact: total

CVSS vector scores

4 official scores

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
10CVSS 4.0CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P——VulDB
10CVSS 3.1CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R3.96VulDB
10CVSS 3.0CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R3.96VulDB
10CVSS 2.0CriticalAV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:UR1010VulDB

Vulnerability scoring details

Base CVSS 4.0 score

10Critical
CVSS 4.0 vector shape for CVE-2026-78167Attack VectorAttack ComplexityAttack RequirementsPrivileges RequiredUser InteractionVS ConfidentialityVS IntegrityVS AvailabilitySS ConfidentialitySS IntegritySS Availability

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Attack Requirements
NonePresent
Privileges Required
NoneLowHigh
User Interaction
NonePassiveActive
VS Confidentiality
HighLowNone
VS Integrity
HighLowNone
VS Availability
HighLowNone
SS Confidentiality
HighLowNone
SS Integrity
HighLowNone
SS Availability
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. Source timelineVulDB

    Advisory disclosed

  2. Source timelineVulDB

    VulDB entry created

  3. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  4. Source timelineVulDB

    VulDB entry last update

  5. CVE publishedCVE Program

    The CVE record was published.

  6. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
EFMipTIME T16000M14.20.2Listed
Weakness

CWE details

CWE-287

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

CWE-287 · source CWE mapping

Improper Authentication

Improper Authentication represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

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