CVE-2026-103653

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 73/100
Published: 2026-11-03 Modified: 2026-11-03 First seen: 2026-11-03 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
AT: None
VC: None
VI: Low
VA: High

Description

An out-of-bounds read vulnerability in the Qt CoAP message parsing (QCoapInternalReply::createFromFrame()) of the Qt CoAP module. Processing a malformed CoAP message can cause an application using Qt CoAP to crash (loss of availability) or to continue operating on incorrect data (potential loss of integrity).

Weakness Classification (1)

Affected Software (4)

VendorProductVersion
qt Qt 5.13.0
qt Qt 6.9.0
qt Qt 5.13.0
qt Qt 6.9.0

Bug Bounty Relevance

73 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

6.7 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/AU:Y/R:U/RE:L/U:Amber

EPSS — Exploitation Probability

0.29%
Raw Score 0.002910
Percentile 21.8%
Date 2026-11-05

EPSS Trend

2026-11-05
0.00291
2026-11-04
0.00291
2026-11-03
0.00291

Intelligence Sources

mitre ref →
nvd ref →