CVE-2026-33848Network attack vector

Memory corruption via DFA decoder off-by-one write

Published Mar 24, 2026 · Updated Mar 24, 2026

Buffer boundary error in LinkingVision RapidVMS before PR#96 allows remote attackers to alter data or crash the service via crafted media. The decode_dds1 function in bundled 3rdparty/ffmpeg/libavcodec/dfa.c accepts a frame with only width + 3 bytes remaining, then writes through frame[width + 1], one byte past the validated boundary. Exploitation requires user interaction with attacker-supplied DFA media; the out-of-bounds write can corrupt process memory, expose or alter data, or terminate the process.

CVSS severity8.8
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer boundary error in LinkingVision RapidVMS before PR#96 allows remote attackers to alter data or crash the service via crafted media. The decode_dds1 function in bundled 3rdparty/ffmpeg/libavcodec/dfa.c accepts a frame with only width + 3 bytes remaining, then writes through frame[width + 1], one byte past the validated boundary. Exploitation requires user interaction with attacker-supplied DFA media; the out-of-bounds write can corrupt process memory, expose or alter data, or terminate the process.

The record

CVE
CVE-2026-33848
Published
Mar 24, 2026
Updated
Mar 24, 2026
Vendor
LinkingVision
Product
RapidVMS
Classifications
CWE-119, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <PR#96

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

LinkingVision · RapidVMSversion=0 <PR#96

Published CVSS scores

8.8Government Technology Agency of Singapore Cyber Security Group (GovTech CSG)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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