CVE-2025-46643

Service interruption via undisclosed heap buffer overflow

Published Jan 9, 2026 · Updated Jan 9, 2026

Heap-based buffer overflow in Dell PowerProtect Data Domain DD OS allows local users with high privileges to interrupt service. Dell identifies the flaw in proprietary DD OS code but has not disclosed the affected component, attacker-controlled input, or exact memory operation that overruns the heap allocation. Exploitation requires high-privilege local access and causes a denial of service; no confidentiality or integrity impact is reported.

CVSS severity2.3
Low
EPSS probability0.16%
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 overflow in Dell PowerProtect Data Domain DD OS allows local users with high privileges to interrupt service. Dell identifies the flaw in proprietary DD OS code but has not disclosed the affected component, attacker-controlled input, or exact memory operation that overruns the heap allocation. Exploitation requires high-privilege local access and causes a denial of service; no confidentiality or integrity impact is reported.

The record

CVE
CVE-2025-46643
Published
Jan 9, 2026
Updated
Jan 9, 2026
Vendor
Dell Technologies
Product
PowerProtect Data Domain
Classifications
CWE-122, CWE-787, T1499
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jan 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=7.10.1.0 <7.10.1.80
  2. Affected versionversion=7.13.1.0 <7.13.1.50
  3. Affected versionversion=7.7.1.0 <8.5.0.0
  4. Affected versionversion=8.3.1.0 <8.3.1.20

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Dell Technologies · PowerProtect Data Domainversion=7.10.1.0 <7.10.1.80; version=7.13.1.0 <7.13.1.50; version=7.7.1.0 <8.5.0.0; version=8.3.1.0 <8.3.1.20

Published CVSS scores

4.4NIST NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
2.3DellCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

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

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow
CWE-787Out-of-bounds Write
T1499Endpoint Denial of Service

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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