Is CVE-2026-88832 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-88832 being exploited in the wild.

How severe is CVE-2026-88832?

High severity, with a CVSS score of 7.3, published 23 September 2026.

Which products and versions are affected?

Busybox before 1.37.0-9.1.hum1.

Is there a fix for CVE-2026-88832?

A patch was published on 2026-09-25: Fixed in BusyBox 1.37.0-9.1.hum1 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-88832 attacked?

It is attacked with local access.

Am I affected by CVE-2026-88832?

Check whether you run Busybox 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.

CVE-2026-88832: BusyBox romfs volume ID parsing heap buffer overflow

CVE-2026-88832 · Severity: high · CVSS 7.3 · Published 2026-09-23

BusyBox, a lightweight Unix toolkit used in embedded systems and containers, contains a heap buffer overflow in its romfs filesystem volume ID parsing logic. An attacker can craft a malicious filesystem image that triggers the overflow when processed, potentially allowing arbitrary code execution or denial of service on systems that parse untrusted filesystem images.

Technologies: Busybox. Vendors: Busybox.

Quick answers

Is CVE-2026-88832 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-88832 being exploited in the wild.
How severe is CVE-2026-88832?: High severity, with a CVSS score of 7.3, published 23 September 2026.
Which products and versions are affected?: Busybox before 1.37.0-9.1.hum1.
Is there a fix for CVE-2026-88832?: A patch was published on 2026-09-25: Fixed in BusyBox 1.37.0-9.1.hum1 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-88832 attacked?: It is attacked with local access.
Am I affected by CVE-2026-88832?: Check whether you run Busybox 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

The vulnerability exists in romfs volume ID parsing code that performs an unbounded strlen operation on attacker-controlled metadata without proper bounds checking, resulting in a heap buffer overflow. An attacker must supply a crafted romfs filesystem image to trigger the vulnerability; exploitation requires the target system to process the malicious image. This could lead to code execution depending on heap state and memory protections.

Affected products

BusyBox BusyBox before 1.37.0-9.1.hum1

Timeline

2026-09-23: disclosed
2026-09-25: patched: Fixed in BusyBox 1.37.0-9.1.hum1

References

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