What is CVE-2026-38426?

CVE-2026-38426 is a high-severity vulnerability in N/a, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.3/10. Published 2026-05-27.

How severe is CVE-2026-38426?

High severity. CVSS v3 base score is 7.3 out of 10.

Is CVE-2026-38426 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in N/a

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.

Vulnerability class: Buffer Overflow

EPSS: 0.002 (46.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

Affected products

N/a — versions n/a

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

Public proof-of-concept exploits

sermikr0/CVE-2026-38426

References

Frequently asked questions

What is CVE-2026-38426?: CVE-2026-38426 is a high-severity vulnerability in N/a, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.3/10. Published 2026-05-27.
How severe is CVE-2026-38426?: High severity. CVSS v3 base score is 7.3 out of 10.
Is CVE-2026-38426 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.