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CVE Record

CVE-2021-35391: Server Side Request Forgery vulnerability found in Deskpro Support Desk v2021.21.6 allows attackers to exec...

Server Side Request Forgery vulnerability found in Deskpro Support Desk v2021.21.6 allows attackers to execute arbitrary code via a crafted URL.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2021-35391 is reported as a server-side request forgery issue in Deskpro Support Desk v2021.21.6 that may allow arbitrary code execution through a crafted URL. The public bundle does not provide CVSS, CWE, vendor confirmation, or fix details, so urgency depends on whether this exact product/version is present.

Executive priority

Treat this as a targeted verification item, not a confirmed emergency, unless Deskpro Support Desk v2021.21.6 is in use. Potential code execution raises business risk, but public evidence is incomplete.

Technical view

The record describes SSRF in Deskpro Support Desk v2021.21.6 with potential arbitrary code execution via a crafted URL. No validated affected CPEs, severity score, patch version, or detailed attack preconditions are included in the supplied sources.

Likely exposure

Likely exposure is limited to environments running Deskpro Support Desk v2021.21.6, based on the title and description. The bundle does not confirm other affected versions, deployment requirements, or whether cloud-hosted instances are impacted.

Exploitation context

The supplied data does not show CISA KEV listing or cite active exploitation. A public reference exists, but the bundle does not provide enough evidence to assess exploit maturity or real-world use.

Researcher notes

The record is sparse: no CVSS, CWE, CPE, vendor advisory, patch version, or exploitation evidence is provided. Avoid broad version claims until vendor or additional primary-source confirmation is available.

Mitigation direction

  • Check Deskpro vendor guidance for fixed versions or official workarounds.
  • Inventory Deskpro Support Desk deployments and identify version v2021.21.6.
  • Prioritize review if the application can reach internal services or metadata endpoints.
  • Restrict unnecessary outbound server-side network access where operationally feasible.
  • Monitor application logs for unusual URL-fetching or callback behavior.

Validation and detection

  • Confirm whether Deskpro Support Desk v2021.21.6 is deployed.
  • Review vendor release notes or advisories for CVE-2021-35391 coverage.
  • Map server egress paths from the Deskpro host to internal networks.
  • Check security logs for anomalous server-initiated requests tied to user input.
Prepared
Confidence
medium
Sources
3

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.

description · low confidence lookup

Execution behavior lookup

The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2021-35391 mapping review

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

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
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.

0CVSS vectors
3Timeline events
2ADP providers
2Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: total

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. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

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

ADP provider summaries

CVECVE Program Container
CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

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