How severe is CVE-2026-37530?

CVE-2026-37530 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-37530 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-37530?

CVE-2026-37530 affects Linuxfoundation Automotive Grade Linux. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-37530?

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

Does CVE-2026-37530 have an EU (EUVD) identifier?

Yes. CVE-2026-37530 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26683.

When was CVE-2026-37530 published?

CVE-2026-37530 was published on 2026-05-01 and last updated on 2026-06-17.

CVE-2026-37530

CVE-2026-37530 is a high-severity vulnerability in Linuxfoundation Automotive Grade Linux with a CVSS 3.x base score of 7.5. 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-121.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-26683
Weakness: CWE-121
Affected product: Linuxfoundation Automotive Grade Linux
Published: 2026-05-01
Last modified: 2026-06-17

Description

AGL agl-service-can-low-level thru 17.1.12 contains a stack buffer overflow in the uds-c library. The send_diagnostic_request function in uds.c allocates a 6-byte stack buffer (MAX_DIAGNOSTIC_PAYLOAD_SIZE=6) but copies up to 7 bytes (MAX_UDS_REQUEST_PAYLOAD_LENGTH=7) via memcpy at an offset of 1+pid_length (2-3 bytes), resulting in 1-4 bytes of controlled stack overflow. The payload_length field (uint8_t) has no bounds check against the destination buffer. On 32-bit ARM automotive ECUs without stack canaries, this can lead to return address overwrite and RCE.

Frequently asked questions

What is CVE-2026-37530?: AGL agl-service-can-low-level thru 17.1.12 contains a stack buffer overflow in the uds-c library. The send_diagnostic_request function in uds.c allocates a 6-byte stack buffer (MAX_DIAGNOSTIC_PAYLOAD_SIZE=6) but copies up to 7 bytes (MAX_UDS_REQUEST_PAYLOAD_LENGTH=7) via memcpy at an offset of 1+pid_length (2-3 bytes), resulting in 1-4 bytes of controlled stack overflow. The payload_length field (uint8_t) has no bounds check against the destination buffer. On 32-bit ARM automotive ECUs without stack canaries, this can lead to return address overwrite and RCE.
How severe is CVE-2026-37530?: CVE-2026-37530 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-37530 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-37530?: CVE-2026-37530 affects Linuxfoundation Automotive Grade Linux. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-37530?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-37530 have an EU (EUVD) identifier?: Yes. CVE-2026-37530 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26683.
When was CVE-2026-37530 published?: CVE-2026-37530 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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