CVE-2021-44144Network attack vector

Memory disclosure and crash via malformed Explicit data

Published Nov 22, 2021 · Updated Aug 4, 2024

Heap-based buffer over-read in Croatia Control Asterix 2.8.1 allows remote attackers to disclose memory or crash the decoder via malformed ASTERIX data. The DataItemFormatExplicit::getText method detects a zero or nondivisible body length but continues processing instead of returning failure, allowing reads beyond the intended buffer. Processing malformed Explicit-format data requires no authentication; documented impact is limited to memory disclosure and a decoder crash.

CVSS severity9.1
Critical
EPSS probability1.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer over-read in Croatia Control Asterix 2.8.1 allows remote attackers to disclose memory or crash the decoder via malformed ASTERIX data. The DataItemFormatExplicit::getText method detects a zero or nondivisible body length but continues processing instead of returning failure, allowing reads beyond the intended buffer. Processing malformed Explicit-format data requires no authentication; documented impact is limited to memory disclosure and a decoder crash.

The record

CVE
CVE-2021-44144
Published
Nov 22, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-125
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 22, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.7GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
6.4NIST NVDAV:N/AC:L/Au:N/C:P/I:N/A:P

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-125Out-of-bounds Read

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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