# CVE-2026-40958: Absolute Security Secure Access input validation error in client tunnel protocol

Source: https://junglewise.ai/threats/cve-2026-40958-absolute-security-secure-access-input-validation-error-in-client  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-15. Updated: 2026-07-15  
License: CC BY 4.0 with a link back

CVE-2026-40958 · Severity: info · CVSS 2.3 · Published 2026-07-15

Absolute Security Secure Access (formerly NetMotion) is a VPN-like solution used to provide secure remote connectivity for mobile workforces. A vulnerability in the client software allows an attacker with deep technical control over the connection protocol to temporarily disrupt the service for a user. This results in a non-persistent denial-of-service, meaning the user's connection may drop or the application may crash, but no data is stolen or permanently lost.

Technologies: [Absolute Security Secure Access](https://junglewise.ai/threats/technologies/secure-access). Vendors: [Absolute Security](https://junglewise.ai/threats/vendors/absolute-security).

## Quick answers

**Is CVE-2026-40958 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-40958 being exploited in the wild.

**How severe is CVE-2026-40958?** Informational severity, with a CVSS score of 2.3, published 15 July 2026.

**Which products and versions are affected?** Absolute Security Secure Access prior to 14.55.

**Is there a fix for CVE-2026-40958?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-40958 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-40958?** Check whether you run Absolute Security Secure Access at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

An input validation error exists in the Absolute Security Secure Access client (formerly NetMotion) tunnel protocol handling. An attacker who has achieved total control over the tunnel protocol and possesses intimate knowledge of its inner workings can exploit this flaw to trigger a non-persistent denial-of-service (DoS) against the client. The vulnerability is categorized as a low-severity issue because it requires significant preconditions (control over the protocol) and only impacts availability temporarily without affecting data confidentiality or integrity. The issue is resolved in Secure Access client version 14.55.

## Affected products

- Absolute Security (formerly NetMotion) Secure Access prior to 14.55

## Timeline

- 2026-07-15: disclosed
- 2026-07-15: advisory

## References

- [https://www.absolute.com/platform/security-information/vulnerability-archive/cve-2026-40958](https://www.absolute.com/platform/security-information/vulnerability-archive/cve-2026-40958)

## Related threats

- [Absolute Security Secure Access resource exhaustion in publisher](https://junglewise.ai/threats/cve-2026-55399-absolute-security-secure-access-resource-exhaustion-in-publisher)
- [Absolute Security Secure Access memory management denial of service](https://junglewise.ai/threats/cve-2026-55398-absolute-security-secure-access-memory-management-denial-of)
- [Absolute Security Secure Access memory management DoS in server](https://junglewise.ai/threats/cve-2026-33445-absolute-security-secure-access-memory-management-dos-in-server)
- [Absolute Security Secure Access memory management DoS](https://junglewise.ai/threats/cve-2026-33444-absolute-security-secure-access-memory-management-dos)
- [Absolute Security Secure Access clickjacking in server login page](https://junglewise.ai/threats/cve-2026-40957-absolute-security-secure-access-clickjacking-in-server-login-page)