Dashboard / CVE-2026-33666

CVE-2026-33666

HIGH
MEDIUM Priority: 0.02 BB Relevance: 75/100
Published: 2026-04-24 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: None
I: None
A: High

Description

Zserio is a framework for serializing structured data with a compact and efficient way with low overhead. Prior to 2.18.1, in BitStreamReader.h readBytes() / readString(), the setBitPosition() bounds check receives the overflowed value and is completely bypassed. The code then reads len bytes (512 MB) from a buffer that is only a few bytes long, causing a segmentation fault. This vulnerability is fixed in 2.18.1.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
nds-association zserio < 2.18.1

References & Advisories (1)

Bug Bounty Relevance

75 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

7.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.33%
Raw Score 0.003280
Percentile 25.9%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00328
2026-10-28
0.00328

Intelligence Sources

nvd ref →

External Links