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, causing allocation of a smaller buffer than the data actually read.
Metrics
Affected Vendors & Products
References
History
Thu, 28 May 2026 01:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Heap Buffer Overflow in Tasmota JPEG Fetch Function Enables Device Crash |
Wed, 27 May 2026 23:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Heap Buffer Overflow in Tasmota JPEG Stream Handler | |
| Weaknesses | CWE-120 |
Wed, 27 May 2026 19:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-122 | |
| Metrics |
cvssV3_1
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Wed, 27 May 2026 17:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Heap Buffer Overflow in Tasmota JPEG Stream Handler | |
| Weaknesses | CWE-120 |
Wed, 27 May 2026 14:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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, causing allocation of a smaller buffer than the data actually read. | |
| References |
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Status: PUBLISHED
Assigner: mitre
Published: 2026-05-27T00:00:00.000Z
Updated: 2026-05-27T18:20:24.531Z
Reserved: 2026-04-06T00:00:00.000Z
Link: CVE-2026-38427
Updated: 2026-05-27T18:20:20.318Z
Status : Deferred
Published: 2026-05-27T14:16:46.023
Modified: 2026-05-27T20:03:09.937
Link: CVE-2026-38427
No data.