CVE-2026-40026

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Source
https://cve.org/CVERecord?id=CVE-2026-40026
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40026.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-40026
Downstream
Published
2026-04-08T21:35:22.278Z
Modified
2026-08-12T16:24:00.696137Z
Severity
  • 4.8 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
Summary
Sleuth Kit ISO9660 SUSP Extension Reference Out-of-Bounds Read
Details

The Sleuth Kit through 4.14.0 contains an out-of-bounds read vulnerability in the ISO9660 filesystem parser where the parsesusp() function trusts lenid, lendes, and lensrc 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.

Database specific 
{
    "cwe_ids": [
        "CWE-125"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40026.json",
    "cna_assigner": "VulnCheck"
}
References

Affected packages

Git / github.com/sleuthkit/sleuthkit

Affected ranges

Type
GIT
Repo
https://github.com/sleuthkit/sleuthkit
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
c6efd66293546b9c95637be703c7c7823e950629
Fixed
a95b0ac21733b059a517aaefa667a17e1bcbdee1
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:sleuthkit:the_sleuth_kit:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "4.14.0"
        }
    ],
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

ct-3.*
ct-3.12.0
ct-3.13.0
ct-3.15.0
ct-3.5.0
ct-3.6.0
ct-3.9.0
sleuthkit-4.*
sleuthkit-4.0.2
sleuthkit-4.12.0
sleuthkit-4.14.0
sleuthkit-4.6.3

Database specific

vanir_signatures_modified 
"2026-08-12T16:24:00Z"
vanir_signatures 
[
    {
        "id": "CVE-2026-40026-52c166b8",
        "deprecated": false,
        "signature_type": "Function",
        "signature_version": "v1",
        "digest": {
            "length": 6782.0,
            "function_hash": "212127960176410529911794671586102054610"
        },
        "source": "https://github.com/sleuthkit/sleuthkit/commit/a95b0ac21733b059a517aaefa667a17e1bcbdee1",
        "target": {
            "function": "parse_susp",
            "file": "tsk/fs/iso9660.c"
        }
    },
    {
        "id": "CVE-2026-40026-91875b52",
        "deprecated": false,
        "signature_type": "Line",
        "signature_version": "v1",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "233558539092633722574665736049748176711",
                "195765578056426174488118137892417144452",
                "60344071820959405280678960589084282209",
                "30900867453472729781591183520589254674",
                "243313524976303149634136105029593070916",
                "275359967314075872764190083014762687939",
                "123671940847300039662671464355675810865",
                "138343585418704777014505504429952598696",
                "38017850216024956619190787057402841864",
                "228986220772744542915084647134351797081",
                "340239638963595765643138732219529893158",
                "188877334575074896663267779004443891551",
                "303550560808725321329088936313682651744",
                "196343806790188397007908359305807735024",
                "55171051598707546203464623365811017667",
                "40510232904825946714020872196767733044",
                "247436399879193791428641180943678371497",
                "40537551830046973177627599348292889442",
                "146644032589958185711943832325022981103"
            ]
        },
        "source": "https://github.com/sleuthkit/sleuthkit/commit/a95b0ac21733b059a517aaefa667a17e1bcbdee1",
        "target": {
            "file": "tsk/fs/iso9660.c"
        }
    }
]
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40026.json"