Quick answer
Direct answer
Risk scores
| CVSS metric | What it means |
|---|---|
| Attack vector (AV:N) | Network: reachable remotely |
| Attack complexity (AC:H) | High complexity |
| Privileges required (PR:N) | No privileges required |
| User interaction (UI:N) | No user interaction |
| Scope (S:U) | Scope unchanged |
| Confidentiality (C:H) | High confidentiality impact |
| Integrity (I:H) | High integrity impact |
| Availability (A:H) | High availability impact |
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
About Dell Powerprotect Dp Series Appliance
CVE-2026-26354 affects Dell Powerprotect Dp Series Appliance, a product from Dell. Before acting, confirm where Dell Powerprotect Dp Series Appliance runs in your estate, who owns it and whether it is reachable from the internet, because exposure decides real risk more than the score alone.
What the flaw is
In plain terms: Dell PowerProtect Data Domain with Domain Operating System (DD OS) of Feature Release versions 7.7.1.0 through 8.6, LTS2025 release version 8.3.1.0 through 8.3.1.10, LTS2024 release versions 7.13.1.0 through 7.13.1.60, contain a stack-based Buffer Overflow vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to arbitrary command execution.
The weakness class is Stack Buffer Overflow. A write past the end of a stack buffer can corrupt control data.
Based on its CVSS vector, the flaw can be reached over the network, needs no login, and needs no user interaction. Apply the vendor fix and confirm exposure on internet facing and business critical assets first.
Affected versions and timeline
| Field | Detail |
|---|---|
| Product | Dell Powerprotect Dp Series Appliance |
| Affected versions | Powerprotect Dp Series Appliance before 2.7.9; Data Domain Operating System from 7.7.1.0 before 7.13.1.60; Data Domain Operating System from 7.14.0.0 before 8.3.1.20; Data Domain Operating System from 8.4.0.0 before 8.6.1.10 |
| Published | Apr 22, 2026 |
| Last modified | Jun 17, 2026 |
| Added to CISA KEV | Not listed |
| Assigning CNA | security_alert@emc.com |
How to detect it
- Inventory every instance of Dell Powerprotect Dp Series Appliance and record the running version against the affected range above.
- Check external attack surface scans for internet facing instances of the component.
- Review logs on affected systems for unusual requests, errors or new processes around the vulnerable function.
- Confirm with an authenticated vulnerability scan once your scanner has a check for this CVE.
How to fix it
- Apply the fixed version of Dell Powerprotect Dp Series Appliance named in the vendor advisory.
- If patching must wait, restrict network access to the affected service and put it behind authentication or a web application firewall rule.
- Rescan after the change to prove the exposure is gone, then close the ticket.
CTEM action plan
| CTEM stage | What to do for this CVE |
|---|---|
| Scope | Add every business service that depends on Dell Powerprotect Dp Series Appliance to the current CTEM cycle. |
| Discover | Find all instances, including shadow and cloud deployments, and record versions and exposure. |
| Prioritize | Rank using EPSS and CVSS together with asset exposure and business impact. |
| Validate | Confirm the flaw is reachable and exploitable in your environment and that compensating controls work. |
| Mobilize | Assign the fix to the asset owner with a due date matched to the priority, then verify closure. |
CWE References
- CWE-121: Stack Buffer Overflow More CVEs with this weakness
- CWE-787: Out of Bounds Write More CVEs with this weakness
Technical References
Frequently asked questions
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