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CVE Record

CVE-2025-65518: Plesk Obsidian versions 8.0.1 through 18.0.73 are vulnerable to a Denial of Service (DoS) condition.

Plesk Obsidian versions 8.0.1 through 18.0.73 are vulnerable to a Denial of Service (DoS) condition. The vulnerability exists in the get_password.php endpoint, where a crafted request containing a malicious payload can cause the affected web interface to continuously reload, rendering the service unavailable to legitimate users. An attacker can exploit this issue remotely without authentication, resulting in a persistent availability impact on the affected Plesk Obsidian instance.

HighCVSS 7.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

This CVE describes a remote, unauthenticated denial-of-service issue in Plesk Obsidian. A crafted request to get_password.php can make the web interface repeatedly reload, preventing legitimate administrators from using the affected instance. The business impact is availability loss, not data theft based on the provided sources.

Executive priority

Treat this as a high-priority availability risk for internet-exposed hosting control panels. It does not indicate confidentiality or integrity compromise in the supplied data, but loss of the Plesk interface can disrupt operations and incident response.

Technical view

Plesk Obsidian versions 8.0.1 through 18.0.73 are described as vulnerable. The issue is mapped to CWE-400 and CWE-606, with CVSS 7.5: network attack vector, low complexity, no privileges, no user interaction, and high availability impact only.

Likely exposure

Internet-facing Plesk Obsidian administration interfaces running versions 8.0.1 through 18.0.73 are the main exposure. The provided affected CPE data is incomplete, so asset owners should verify installed Plesk versions directly.

Exploitation context

The provided bundle says exploitation is remote and unauthenticated, but KEV is false and no cited source in the bundle confirms active exploitation in the wild. Public exploitability details should be treated cautiously and not used as proof of active attacks.

Researcher notes

The bundle provides CVSS, CWE mapping, affected version range, and endpoint-level description. It does not provide a confirmed fixed version, vendor mitigation text, or evidence of exploitation. Avoid assuming impact beyond denial of service without additional vendor confirmation.

Mitigation direction

  • Identify Plesk Obsidian instances and record exact installed versions.
  • Review Plesk release notes and vendor guidance for the fixed or recommended build.
  • Prioritize updating affected versions once vendor guidance confirms the remediation path.
  • Restrict internet access to the Plesk web interface where operationally feasible.
  • Monitor Plesk web interface availability and repeated reload symptoms.

Validation and detection

  • Confirm whether any Plesk Obsidian instance runs versions 8.0.1 through 18.0.73.
  • Check whether get_password.php is reachable from untrusted networks.
  • Review logs for abnormal unauthenticated requests to the Plesk password recovery endpoint.
  • Verify that monitoring detects administrator interface unavailability or reload loops.
  • Document compensating controls if an immediate update is not possible.
Prepared
Confidence
medium
Sources
7

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · low confidence lookup

CWE-400: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
cwe · low confidence lookup

CWE-606: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2025-65518 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
High
CVSS
7.5 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

2CVSS vectors
5Timeline events
2ADP providers
6Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: pocAutomatable: yesTechnical Impact: partial

CVSS vector scores

2 official scores

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
7.5CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6CISA-ADP
7.5CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6redhat-SADP

Vulnerability scoring details

Base CVSS 3.1 score

7.5High
CVSS 3.1 vector shape for CVE-2025-65518Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. ADP timelineredhat-SADP

    Made public.

  3. CVE publishedCVE Program

    The CVE record was published.

  4. ADP timelineredhat-SADP

    Reported to Red Hat.

  5. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
cvssV3_1other:ssvc
redhat-SADPplesk: Plesk Obsidian: Denial of Service via crafted request to get_password.php
other:Red Hat severity ratingcvssV3_1
  • 2026-01-08T19:01:09.861Z: Reported to Red Hat.
  • 2026-01-08T00:00:00.000Z: Made public.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

CWE-400CWE-606

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-400 · source CWE mapping

Uncontrolled Resource Consumption

Uncontrolled Resource Consumption represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

Open CWE intelligenceSame-CWE CVEs
CWE-606 · source CWE mapping

Unchecked Input for Loop Condition

Unchecked Input for Loop Condition represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

Open CWE intelligenceSame-CWE CVEs