CVE-2026-15690 (GCVE-0-2026-15690)

Vulnerability from cvelistv5 – Published: 2026-07-14 11:45 – Updated: 2026-07-14 12:56
VLAI
Title
open62541 Shared Client ua_client_connect.c responseReadNamespacesArray null pointer dereference
Summary
A vulnerability was identified in open62541 up to 1.5.5. Affected by this issue is the function responseReadNamespacesArray of the file src/client/ua_client_connect.c of the component Shared Client Library. Such manipulation of the argument Server_NamespaceArray leads to null pointer dereference. The attack can be executed remotely. The attack requires a high level of complexity. The exploitation is known to be difficult. The exploit is publicly available and might be used. The project closed the issue report, stating that this is not the official way to report a security vulnerability.
Severity
2.3 (Low)
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
3.1 (Low)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
3.1 (Low)
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
URL Tags
https://vuldb.com/vuln/378237 vdb-entrytechnical-description
https://vuldb.com/vuln/378237/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-15690 third-party-advisory
https://vuldb.com/submit/855996 third-party-advisory
https://github.com/open62541/open62541/issues/8104 exploitissue-tracking
https://github.com/open62541/open62541/ product
Impacted products
Vendor Product Version
n/a open62541 Affected: 1.5.0
Affected: 1.5.1
Affected: 1.5.2
Affected: 1.5.3
Affected: 1.5.4
Affected: 1.5.5
    cpe:2.3:a:open62541:open62541:*:*:*:*:*:*:*:*
Credits
Chuan Wei VULL (VulDB User) VULL (VulDB User) VulDB CNA Team
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.