How severe is CVE-2026-37531?

CVE-2026-37531 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-37531 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-37531?

CVE-2026-37531 affects Linuxfoundation Automotive Grade Linux. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-37531?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-37531 have an EU (EUVD) identifier?

Yes. CVE-2026-37531 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26685.

When was CVE-2026-37531 published?

CVE-2026-37531 was published on 2026-05-01 and last updated on 2026-06-17.

CVE-2026-37531

CVE-2026-37531 is a critical-severity vulnerability in Linuxfoundation Automotive Grade Linux with a CVSS 3.x base score of 9.8. 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-22.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-26685
Weakness: CWE-22
Affected product: Linuxfoundation Automotive Grade Linux
Published: 2026-05-01
Last modified: 2026-06-17

Description

AGL app-framework-main thru 17.1.12 contains a Zip Slip path traversal vulnerability (CWE-22) combined with a TOCTOU race condition (CWE-367) in the widget installation flow. The is_valid_filename function in wgtpkg-zip.c validates ZIP entry names but does not check for dot notation directory traversal sequences it only blocks absolute paths. The zread extraction function uses openat(workdirfd, filename, O_CREAT) which resolves dot notation values relative to the work directory, allowing files to be written anywhere on the filesystem. Critically, in function install_widget in file wgtpkg-install.c, extraction via zread occurs BEFORE signature verification via check_all_signatures. Even if signature verification fails, the error cleanup (remove_workdir) only deletes the temporary work directory files written outside via path traversal persist permanently.

Frequently asked questions

What is CVE-2026-37531?: AGL app-framework-main thru 17.1.12 contains a Zip Slip path traversal vulnerability (CWE-22) combined with a TOCTOU race condition (CWE-367) in the widget installation flow. The is_valid_filename function in wgtpkg-zip.c validates ZIP entry names but does not check for dot notation directory traversal sequences it only blocks absolute paths. The zread extraction function uses openat(workdirfd, filename, O_CREAT) which resolves dot notation values relative to the work directory, allowing files to be written anywhere on the filesystem. Critically, in function install_widget in file wgtpkg-install.c, extraction via zread occurs BEFORE signature verification via check_all_signatures. Even if signature verification fails, the error cleanup (remove_workdir) only deletes the temporary work directory files written outside via path traversal persist permanently.
How severe is CVE-2026-37531?: CVE-2026-37531 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-37531 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-37531?: CVE-2026-37531 affects Linuxfoundation Automotive Grade Linux. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-37531?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-37531 have an EU (EUVD) identifier?: Yes. CVE-2026-37531 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26685.
When was CVE-2026-37531 published?: CVE-2026-37531 was published on 2026-05-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:linuxfoundation:automotive_grade_linux:*:*:*:*:*:*:*:*

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