How severe is CVE-2026-38426?

CVE-2026-38426 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-38426 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-38426?

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-2026-38426 have an EU (EUVD) identifier?

Yes. CVE-2026-38426 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32692.

When was CVE-2026-38426 published?

CVE-2026-38426 was published on 2026-05-27 and last updated on 2026-06-17.

CVE-2026-38426

CVE-2026-38426 is a high-severity vulnerability with a CVSS 3.x base score of 7.3. 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-120.

Key facts

Severity: High (CVSS 3.x base score 7.3)
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-32692
Weakness: CWE-120
Published: 2026-05-27
Last modified: 2026-06-17

Description

Buffer Overflow vulnerability in arendst Tasmota v.15.3.0.3 and before allows a remote attacker to execute arbitrary code via the xdrv_10_scripter.ino, fetch_jpg(), jpg_task.boundary[40], strcpy() function.

Frequently asked questions

What is CVE-2026-38426?: Buffer Overflow vulnerability in arendst Tasmota v.15.3.0.3 and before allows a remote attacker to execute arbitrary code via the xdrv_10_scripter.ino, fetch_jpg(), jpg_task.boundary[40], strcpy() function.
How severe is CVE-2026-38426?: CVE-2026-38426 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-38426 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-38426?: 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-2026-38426 have an EU (EUVD) identifier?: Yes. CVE-2026-38426 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32692.
When was CVE-2026-38426 published?: CVE-2026-38426 was published on 2026-05-27 and last updated on 2026-06-17.

References

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