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CVE Record

CVE-2026-63586: Unauthenticated Remote Code Execution via Shell Injection in Web Management Interface

The web-based management interface uses a modified uhttpd server with CGI shell scripts. The HTTP Basic Authentication username, taken directly from the Authorization header without sanitization, is inserted into a shell command string executed via the system() function. By submitting a specially crafted username containing shell metacharacters, an unauthenticated attacker with network access to the device can escape the command context and execute arbitrary commands with root privileges.

CriticalCVSS 9.8Not KEV-listedUpdated
Glexia's TakeAutomated analysiscritical

Security readout for executives and security teams

Plain-English summary

A flaw in the device management interface may let any network-reachable attacker run operating-system commands as root without valid credentials. Successful exploitation could expose configuration and credentials, alter device behavior, or interrupt service. However, the supplied product records mark the listed versions “unaffected,” conflicting with the vulnerability description, so precise affected scope requires vendor confirmation.

Executive priority

Treat this as an immediate exposure-verification priority. Within the shortest operationally safe window, identify named devices and block untrusted management access. Escalate confirmed reachable instances for emergency containment and vendor-directed remediation. Because the supplied version status is contradictory, obtain authoritative clarification before declaring specific firmware affected or remediated.

Technical view

Unsanitized HTTP Basic Authentication usernames are inserted into a shell command executed through system(). Shell metacharacters can escape the intended command context, producing unauthenticated root-level command injection (CWE-78). CVSS 3.1 is 9.8 because exploitation is network-based, low-complexity, requires no privileges or user interaction, and may fully compromise confidentiality, integrity, and availability.

Likely exposure

Risk is highest where a listed device’s web management interface is reachable from untrusted, corporate, or compromised operational networks. The bundle names IE-SR-2TX-WL 1.52 and two 1.67 variants, but also marks them “unaffected.” Do not treat those version entries as confirmed exposure until reconciled with Weidmueller or CERT@VDE guidance.

Exploitation context

The bundle does not report active exploitation, and the CVE is not listed as KEV. The described attack requires only network access to the management interface and no valid credentials. Its low complexity and root-level outcome make exposed interfaces urgent to investigate, while current real-world exploitation status remains unconfirmed.

Researcher notes

The core trust-boundary failure is attacker-controlled Authorization-header data reaching a shell interpreter through system() without sanitization. Root execution follows from the CGI/web-server execution context described in the bundle. Product and firmware applicability remains ambiguous because all listed version records have defaultStatus “unaffected.” No patch version, workaround, proof of concept, or observed exploitation evidence is supplied.

Mitigation direction

  • Check the CERT@VDE advisory and Weidmueller guidance for confirmed affected versions, updates, or vendor mitigations.
  • Restrict web management access to authorized administration networks and trusted hosts.
  • Remove management interfaces from internet exposure and isolate affected devices from untrusted networks.
  • Disable remote web management where operationally safe until affected status and remediation are confirmed.
  • Monitor management-interface requests and device activity for anomalies or unexpected configuration changes.

Validation and detection

  • Inventory the named models, installed firmware versions, and management-interface network locations.
  • Verify whether each management interface is reachable from internet, user, vendor, wireless, or operational networks.
  • Compare inventory against the latest CERT@VDE and Weidmueller affected-version statements.
  • Review authentication and web-server logs for unusual Basic Authentication usernames or repeated malformed requests.
  • Check device integrity, configurations, accounts, and processes using approved defensive procedures.
Prepared
Confidence
medium
Sources
3

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-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 lookup
description · low confidence lookup

Execution 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 lookup
cve · low confidence lookup

CVE-2026-63586 mapping review

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

Open ATT&CK lookup
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.

2CVSS vectors
3Timeline events
1ADP providers
2Source links

SSVC decision data

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

CVSS vector scores

2 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
9.8CVSS 3.1CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9CERTVDE
9.3CVSS 4.0CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N——CERTVDE

Vulnerability scoring details

Base CVSS 4.0 score

9.3Critical
CVSS 4.0 vector shape for CVE-2026-63586Attack 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:N/SI:N/SA:N

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. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. 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
Weidmueller InterfaceIE-SR-2TX-WL1.52unaffected
Weidmueller InterfaceIE-SR-2TX-WL-4G-EU1.67unaffected
Weidmueller InterfaceIE-SR-2TX-WL-4G-US-V1.67unaffected
Weakness

CWE details

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

CWE-78 · source CWE mapping

Improper Neutralization of Special Elements used in an OS Command

Improper Neutralization of Special Elements used in an OS Command represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.