What is CVE-2026-38427?

CVE-2026-38427 is a high-severity vulnerability in N/a, classified under Heap-based Buffer Overflow. CVSS score: 7.3/10. Published 2026-05-27.

How severe is CVE-2026-38427?

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

Is CVE-2026-38427 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-2026-38427

An issue in fetch_jpg() in xdrv_10_scripter.ino in Tasmota through 15.3.0.3 allows a remote attacker to cause heap buffer overflow. The Content-Length from a JPEG stream is stored in a uint16_t variable; values above 65535 wrap around, cau…

Vulnerability class: Buffer Overflow

EPSS: 0.001 (30.2th 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-122 — Heap-based Buffer Overflow

Public proof-of-concept exploits

sermikr0/CVE-2026-38427

References

Frequently asked questions

What is CVE-2026-38427?: CVE-2026-38427 is a high-severity vulnerability in N/a, classified under Heap-based Buffer Overflow. CVSS score: 7.3/10. Published 2026-05-27.
How severe is CVE-2026-38427?: High severity. CVSS v3 base score is 7.3 out of 10.
Is CVE-2026-38427 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.