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TI-2026-81797 Aliases CVE-2026-86378GHSA-vfjw-xgrm-r7v7

Stack-based buffer overflow in Dell PowerProtect Data Domain

Priority MEDIUM 40CWE-121Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.

Summary

Dell PowerProtect Data Domain Feature Release versions 7.7.1.0 through 8.8, LTS2024 versions 7.13.1.0 through 7.13.1.80, LTS2025 versions 8.3.1.0 through 8.3.1.40 and LTS2026 versions 8.6.1.0 through 8.6.1.20 are affected. A stack-based buffer overflow (CWE-121) lets a remote attacker with low privileges potentially gain unauthorized access.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Dell PowerProtect Data Domain, Feature Release versions 7.7.1.0 through 8.8, LTS2024 release versions 7.13.1.0 through 7.13.1.80, LTS2025 release versions 8.3.1.0 through 8.3.1.40, LTS2026 release versions 8.6.1.0 through 8.6.1.20, contain a Stack-based Buffer Overflow vulnerability. A low privileged attacker with remote access could potentially exploit this vulnerability, leading to unauthorized access.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00367 30th percentileScored 2026-11-07
Fix Fixed PowerProtect Data Domain (Dell): 8.9.0.0 or later, 7.13.1.90 or later, 8.3.1.50 or later +1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
DellPowerProtect Data Domainbefore 8.9.0.0 or later; before 7.13.1.90 or later; before 8.3.1.50 or later; before 8.6.1.30 or later8.9.0.0 or later, 7.13.1.90 or later, 8.3.1.50 or later, 8.6.1.30 or laterPatch availableCNA
  • PowerProtect Data Domain VendorDell Affected before 8.9.0.0 or later; before 7.13.1.90 or later; before 8.3.1.50 or later; before 8.6.1.30 or later Fixed in 8.9.0.0 or later, 7.13.1.90 or later, 8.3.1.50 or later, 8.6.1.30 or later Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:o:dell:data_domain_operating_system:*:*:*:*:*:*:*:*——Dell
  • cpe:2.3:o:dell:data_domain_operating_system:*:*:*:*:*:*:*:* Versions — — ·Dell

Remediation

Upgrade Dell PowerProtect Data Domain to 8.9.0.0 or later, 7.13.1.90 or later, 8.3.1.50 or later, or 8.6.1.30 or later, depending on the release line.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA PowerProtect Data Domain (Dell) Fixed in 8.9.0.0 or later, 7.13.1.90 or later, 8.3.1.50 or later, 8.6.1.30 or later

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Dell PowerProtect Data Domain — dell.com/support/kbdoc/en-us/000515178/dsa-2026-416-securit…

    33 records Highest priority Priority MEDIUM 8 MEDIUM, 25 LOW

    Other records, highest priority first

    • TI-2026-81779 Improper authentication in Dell PowerProtect Data DomainPriority MEDIUM 51
    • TI-2026-81928 Stack-based buffer overflow in Dell PowerProtect Data DomainPriority MEDIUM 50
    • TI-2026-81784 Hard-coded key in Dell PowerProtect Data Domain exposes credentialsPriority MEDIUM 49
    Show all 33 records → Advisory →

Timeline

  1. 2026-10-28 Threatist record created from CVE-2026-86378
  2. 2026-10-28 Alias added: GHSA-vfjw-xgrm-r7v7
  3. 2026-10-29 CISA SSVC decision points changed
  4. 2026-10-29 Priority changed: MEDIUM → LOW
  5. 2026-10-29 CISA SSVC decision points changed
  6. 2026-10-30 Priority changed: LOW → MEDIUM

References

Advisory 1

  • TI-2026-18287 Hard-coded credentials in Dell RecoverPoint for Virtual Machines KEVCVSS 3.1CRITICAL 10.0
  • TI-2021-04636 Dell dbutil_2_3.sys driver contains an insufficient access control vulnerability which… KEVCVSS 3.1HIGH 8.8
  • TI-2025-24909 OS command injection in Dell Unity CVSS 3.1CRITICAL 9.8
  • TI-2018-01121 Dell EMC iDRAC7/iDRAC8, versions prior to 2.52.52.52, contain CGI injection vulnerability… CVSS 3.0CRITICAL 9.8
  • TI-2020-09565 The Treck TCP/IP stack before 6.0.1.66 has an IPv6 Out-of-bounds Read. KEVCVSS 3.1MEDIUM 5.4
  • TI-2022-08298 Improper authentication in Dell Integrated Dell Remote Access Controller 9 CVSS 3.1CRITICAL 9.8
See all 2081 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences