CVE-2021-44493Network attack vector

Process crash via negative memcpy length

Published Apr 15, 2022 · Updated Aug 4, 2024

Stack buffer overflow in YottaDB through r1.32 and V7.0-000 and FIS GT.M through V7.0-000 allows remote attackers to crash a process. The $Extract path permits a signed buffer-size integer to become a large negative value and passes it as the length of a stack-based memcpy operation. The path must process crafted input; the documented consequence is service interruption rather than data disclosure or modification.

CVSS severity7.5
High
EPSS probability1.68%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack buffer overflow in YottaDB through r1.32 and V7.0-000 and FIS GT.M through V7.0-000 allows remote attackers to crash a process. The $Extract path permits a signed buffer-size integer to become a large negative value and passes it as the length of a stack-based memcpy operation. The path must process crafted input; the documented consequence is service interruption rather than data disclosure or modification.

The record

CVE
CVE-2021-44493
Published
Apr 15, 2022
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-120
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 15, 2022CVE 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

7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.0NVDAV:N/AC:L/Au:N/C:N/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-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

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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