ESB-2026.3659 — Vulnetix

ESB-2026.3659 PUBLISHED CVSS 9.100000381469727 CRITICAL

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.3659 [R2] Tenable Identity Exposure Version 3.77.17 Fixes Multiple Vulnerabilities 15 April 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: Tenable Identity Exposure Publisher: Tenable Operating System: Windows Linux Resolution: Patch/Upgrade CVE Names: CVE-2026-21218 CVE-2026-21710 CVE-2026-21713 CVE-2026-21714 CVE-2026-21715 CVE-2026-21716 CVE-2026-21717 CVE-2025-55130 CVE-2025-55131 CVE-2025-55132 CVE-2025-59465 CVE-2025-59466 CVE-2026-21637 CVE-2026-26130 CVE-2026-21262 CVE-2026-26115 CVE-2026-23941 CVE-2026-23942 CVE-2026-23943 Original Bulletin: https://www.tenable.com/security/tns-2026-11 Comment: CVSS (Max): 9.1 CVE-2025-55130 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N) CVSS Source: Microsoft Corporation, EEF, [NIST], HackerOne Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N EPSS (Max): 0.7% (71st) CVE-2026-26130 2026-04-14 - --------------------------BEGIN INCLUDED TEXT-------------------- [R2] Tenable Identity Exposure Version 3.77.17 Fixes Multiple Vulnerabilities Critical Synopsis Tenable Identity Exposure leverages third-party software to help provide underlying functionality. Several of the third-party components (.NET Windows Server Hosting, NodeJS, Erlang OTP, SQL Server) were found to contain vulnerabilities, and updated versions have been made available by the providers. Out of caution and in line with best practice, Tenable has opted to upgrade these components to address the potential impact of the issues. Tenable Identity Exposure version 3.77.17 updates .NET Windows Server Hosting to version 8.0.25, NodeJS to version 20.20.2.0, Erlang OTP to version 26.2.5.18, and SQL Server to version 15.0.4460.4 to address the identified vulnerabilities. Solution Tenable has released Tenable Identity Exposure version 3.77.17 to address these issues. The installation files can be obtained from the Tenable Downloads Portal: https://www.tenable.com/downloads/identity-exposure Additional References https://docs.tenable.com/release-notes/Content/identity-exposure/onprem/ 2026.htm#Tenable-Identity-Exposure-3.77.17-(2026-04-08)- This page contains information regarding security vulnerabilities that may impact Tenable's products. This may include issues specific to our software, or due to the use of third-party libraries within our software. Tenable strongly encourages users to ensure that they upgrade or apply relevant patches in a timely manner. Tenable takes product security very seriously. If you believe you have found a vulnerability in one of our products, we ask that you please work with us to quickly resolve it in order to protect customers. Tenable believes in responding quickly to such reports, maintaining communication with researchers, and providing a solution in short order. For more details on submitting vulnerability information, please see our Vulnerability Reporting Guidelines page. If you have questions or corrections about this advisory, please email [email protected] Risk Information CVE ID: CVE-2025-55130 CVE-2025-55131 CVE-2025-55132 CVE-2025-59465 CVE-2025-59466 CVE-2026-21218 CVE-2026-21262 CVE-2026-21637 CVE-2026-21710 CVE-2026-21713 CVE-2026-21714 CVE-2026-21715 CVE-2026-21716 CVE-2026-21717 CVE-2026-23941 CVE-2026-23942 CVE-2026-23943 CVE-2026-26115 CVE-2026-26130 Tenable Advisory ID: TNS-2026-11 Risk Factor: Critical CVSSv3 Base / Temporal Score: 9.1 / 7.9 (CVE-2025-55130) 7.1 / 6.2 (CVE-2025-55131) 5.3 / 4.6 (CVE-2025-55132) 7.5 / 6.5 (CVE-2025-59465) 7.5 / 6.5 (CVE-2025-59466) 7.5 / 6.5 (CVE-2026-21218) 8.8 / 7.7 (CVE-2026-21262) 7.5 / 6.5 (CVE-2026-21637) 7.5 / 6.5 (CVE-2026-21710) 5.9 / 5.2 (CVE-2026-21713) 5.3 / 4.6 (CVE-2026-21714) 3.3 / 2.9 (CVE-2026-21715) 3.3 / 2.9 (CVE-2026-21716) 5.9 / 5.2 (CVE-2026-21717) 5.3 / 4.6 (CVE-2026-23941) 6.5 / 5.7 (CVE-2026-23942) 7.5 / 6.5 (CVE-2026-23943) 8.8 / 7.7 (CVE-2026-26115) 7.5 / 6.5 (CVE-2026-26130) CVSSv3 Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C (CVE-2025-55130) AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L/E:U/RL:O/RC:C (CVE-2025-55131) AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C (CVE-2025-55132) AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C (CVE-2025-59465) AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C (CVE-2025-59466) AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C (CVE-2026-21218) AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C (CVE-2026-21262) AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C (CVE-2026-21637) AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C (CVE-2026-21710) AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C (CVE-2026-21713) AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C (CVE-2026-21714) AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C (CVE-2026-21715) AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C (CVE-2026-21716) AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C (CVE-2026-21717) AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C (CVE-2026-23941) AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C (CVE-2026-23942) AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C (CVE-2026-23943) AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C (CVE-2026-26115) AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C (CVE-2026-26130) CVSSv4 Base Score: 8.7 (CVE-2026-21218) 7 (CVE-2026-23941) 5.3 (CVE-2026-23942) 6.9 (CVE-2026-23943) CVSSv4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N (CVE-2026-21218) CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:L (CVE-2026-23941) CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N (CVE-2026-23942) CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N (CVE-2026-23943) CWE: CWE-289: Authentication Bypass by Alternate Name (CVE-2025-55130) CWE-120: Buffer Copy without Checking Size of Input (CVE-2025-55131) CWE-276: Incorrect Default Permissions (CVE-2025-55132) CWE-400: Uncontrolled Resource Consumption(CVE-2025-59465) CWE-248: Uncaught Exception (CVE-2025-59466) CWE-166: Improper Handling of Missing Special Element (CVE-2026-21218) CWE-284: Improper Access Control (CVE-2026-21262) CWE-400: Uncontrolled Resource Consumption (CVE-2026-21637) CWE-770: Allocation of Resources Without Limits or Throttling (CVE-2026-21710) CWE-401: Missing Release of Memory after Effective Lifetime (CVE-2026-21714) CWE-732: Incorrect Permission Assignment for Critical Resource (CVE-2026-21715) CWE-862: Missing Authorization (CVE-2026-21716) CWE-444: Inconsistent Interpretation of HTTP Requests (HTTP Request Smuggling) (CVE-2026-23941) CWE-22: Improper Limitation of a Pathname to a Restricted Directory (Path Traversal) (CVE-2026-23942) CWE-409: Improper Handling of Highly Compressed Data (Data Amplification) (CVE-2026-23943) CWE-1287: Improper Validation of Specified Type of Input (CVE-2026-26115) CWE-770: Allocation of Resources Without Limits or Throttling(CVE-2026-26130) Affected Products Tenable Identity Exposure 3.77.16 and earlier Advisory Timeline 2026-04-14 - [R1] Initial Release 2026-04-14 - [R2] Risk Factor Assignment > - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AUSCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AUSCERT's members. As AUSCERT did not write the document quoted above, AUSCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AUSCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://portal.auscert.org.au/bulletins/ =========================================================================== AUSCERT The University of Queensland, Brisbane QLD 4072 Australia e: auscert@auscert.org.au t: +61 (0)7 3365 4417 Allies in Cyber Security ===========================================================================

Risk Scores

CVSS v3.1

9.100000381469727

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

Affected Products

Vendor	Product	Versions
Tenable	Tenable Identity Exposure

Timeline

Apr 15, 2026 CVE Published

References

http://portal.auscert.org.au/bulletins/ESB-2026.3659/ advisory
https://www.tenable.com/security/tns-2026-11 advisory

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