Is CVE-2026-76988 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-76988 being exploited in the wild.

How severe is CVE-2026-76988?

Medium severity, with a CVSS score of 5.3, published 20 August 2026.

Which products and versions are affected?

liftoff-sr CIPster up to commit 80040d1 (before ea870a274bf68dfaa3f511f20e2fff6778fb7b74).

Is there a fix for CVE-2026-76988?

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-2026-76988 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-76988?

Check whether anything you run is named in the advisory. 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.

CVE-2026-76988: liftoff-sr CIPster out-of-bounds read in ForwardOpen handler

CVE-2026-76988 · Severity: medium · CVSS 5.3 · Published 2026-08-20

CIPster is an EtherNet/IP protocol stack used in industrial I/O adapter devices. A vulnerability in the ForwardOpen connection handler allows remote attackers to craft malicious network messages that trigger an out-of-bounds memory read, potentially leading to information disclosure or denial of service in industrial control systems relying on this stack.

Quick answers

Is CVE-2026-76988 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-76988 being exploited in the wild.
How severe is CVE-2026-76988?: Medium severity, with a CVSS score of 5.3, published 20 August 2026.
Which products and versions are affected?: liftoff-sr CIPster up to commit 80040d1 (before ea870a274bf68dfaa3f511f20e2fff6778fb7b74).
Is there a fix for CVE-2026-76988?: 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-2026-76988 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-76988?: Check whether anything you run is named in the advisory. 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

The vulnerability is an out-of-bounds read in the CipConnMgrClass::forward_open function within cipconnectionmanager.cc. The flaw is triggered by manipulation of the product_code_ argument, allowing an attacker to read memory outside intended buffer boundaries. The attack is network-accessible and requires no authentication or user interaction. An attacker can exploit this remotely to leak sensitive information from the affected device's memory or cause denial of service. A patch has been identified (commit ea870a274bf68dfaa3f511f20e2fff6778fb7b74) and should be applied to remediate the issue.

Affected products

liftoff-sr CIPster up to commit 80040d1 (before ea870a274bf68dfaa3f511f20e2fff6778fb7b74)

Timeline

2026-08-20: disclosed: CVE-2026-76988 published on NVD

References

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