CVE-2026-18785 (GCVE-0-2026-18785)

Vulnerability from cvelistv5 – Published: 2026-08-04 16:45 – Updated: 2026-08-04 17:35
VLAI
Title
o6 open62541 client_types_custom.c UA_Client_getRemoteDataTypes use after free
Summary
A vulnerability was determined in o6 open62541 ca356b088ada7dee824d1b4acd07c1ff07ce242b. Impacted is the function UA_Client_getRemoteDataTypes of the file examples/custom_datatype/client_types_custom.c. Executing a manipulation can lead to use after free. It is possible to launch the attack on the local host. The exploit has been publicly disclosed and may be utilized. The project closed the issue report, stating that this is not the official way to report a security vulnerability.
Severity
4.8 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
5.3 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
5.3 (Medium)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/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/385787 vdb-entrytechnical-description
https://vuldb.com/vuln/385787/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-18785 third-party-advisory
https://vuldb.com/submit/857052 third-party-advisory
https://github.com/open62541/open62541/issues/8131 issue-tracking
https://github.com/gff-cw/information/issues/12 exploitissue-tracking
Impacted products
Vendor Product Version
o6 open62541 Affected: ca356b088ada7dee824d1b4acd07c1ff07ce242b
    cpe:2.3:a:open62541:open62541:*:*:*:*:*:*:*:*
 Create a notification for this product.
Credits
Chuan Wei (SCU) VULL (VulDB User) SCU_1CP (VulDB User) VulDB CNA Team
Show details on NVD website
To clipboard 

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Taxonomy of the tags.





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

Author Source Type Date Other

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.