HOMEVULNERABILITIESCVE-2021-38479
HIGH

CVE-2021-38479

CWE-787Published: October 22, 2021· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

Many API function codes receive raw pointers remotely from the user and trust these pointers as valid in-bound memory regions. An attacker can manipulate API functions by writing arbitrary data into the resolved address of a raw pointer.

NVD Source

Technical Analysis

CVE-2021-38479 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 7.5.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected Vendors & Products

auvesy1 product(s)
versiondog
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
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Official Patches & Advisories

All References (2)

https://us-cert.cisa.gov/ics/advisories/icsa-21-292-01Patch · Third Party Advisory · US Government Resource
https://us-cert.cisa.gov/ics/advisories/icsa-21-292-01Patch · Third Party Advisory · US Government Resource

Quick Facts

CVE IDCVE-2021-38479
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-787
CISA KEVNo
Affected1 vendor(s)
PublishedOct 22, 2021

Related CVEs (CWE-787)

Recommended Actions

  • Apply vendor patches immediately
  • Monitor CVE-2021-38479 in threat intel feeds
  • Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.