How severe is CVE-2026-40026?

CVE-2026-40026 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity none, and availability low.

Is CVE-2026-40026 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-40026?

CVE-2026-40026 affects Sleuthkit The Sleuth Kit. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-40026?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-40026 have an EU (EUVD) identifier?

Yes. CVE-2026-40026 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-20763.

When was CVE-2026-40026 published?

CVE-2026-40026 was published on 2026-04-08 and last updated on 2026-06-17.

CVE-2026-40026

CVE-2026-40026 is a medium-severity vulnerability in Sleuthkit The Sleuth Kit with a CVSS 3.x base score of 4.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.

Key facts

Severity: Medium (CVSS 3.x base score 4.4)
CVSS v4: 4.8
EPSS exploit prediction: 0% (3rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-20763
Weakness: CWE-125
Affected product: Sleuthkit The Sleuth Kit
Published: 2026-04-08
Last modified: 2026-06-17

Description

The Sleuth Kit through 4.14.0 contains an out-of-bounds read vulnerability in the ISO9660 filesystem parser where the parse_susp() function trusts len_id, len_des, and len_src fields from the disk image to memcpy data into a stack buffer without verifying that the source data falls within the parsed SUSP block. An attacker can craft a malicious ISO image that causes reads past the end of the SUSP data buffer, and a zero-length SUSP entry can trigger an infinite parsing loop.

Frequently asked questions

What is CVE-2026-40026?: The Sleuth Kit through 4.14.0 contains an out-of-bounds read vulnerability in the ISO9660 filesystem parser where the parse_susp() function trusts len_id, len_des, and len_src fields from the disk image to memcpy data into a stack buffer without verifying that the source data falls within the parsed SUSP block. An attacker can craft a malicious ISO image that causes reads past the end of the SUSP data buffer, and a zero-length SUSP entry can trigger an infinite parsing loop.
How severe is CVE-2026-40026?: CVE-2026-40026 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity none, and availability low.
Is CVE-2026-40026 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-40026?: CVE-2026-40026 affects Sleuthkit The Sleuth Kit. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-40026?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-40026 have an EU (EUVD) identifier?: Yes. CVE-2026-40026 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-20763.
When was CVE-2026-40026 published?: CVE-2026-40026 was published on 2026-04-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:sleuthkit:the_sleuth_kit:*:*:*:*:*:*:*:*

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