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CVE Record

CVE-2021-42951: A Remote Code Execution (RCE) vulnerability exists in Algorithmia MSOL all versions before October 10 2021...

A Remote Code Execution (RCE) vulnerability exists in Algorithmia MSOL all versions before October 10 2021 of SaaS. Users can register for an account and are allocated a set number of credits to try the product. Once users authenticate, they can proceed to create a new, specially crafted Algorithm and subsequently launch remote code execution with their desired result.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2021-42951 is a reported remote code execution issue in Algorithmia MSOL SaaS before October 10, 2021. A registered user could create a specially crafted algorithm and cause code execution. The record does not provide CVSS, a vendor advisory, or evidence of active exploitation.

Executive priority

Treat as a historical high-impact SaaS issue. Prioritize confirmation of past exposure and vendor patch status over emergency response unless logs indicate suspicious activity.

Technical view

The CVE describes authenticated RCE in Algorithmia MSOL SaaS versions before October 10, 2021. The attack path requires account registration/authentication, then creation of a crafted Algorithm that triggers code execution. Public data lacks affected CPEs, CWE mapping, scoring, and detailed remediation text.

Likely exposure

Exposure appears limited to organizations using Algorithmia MSOL SaaS before October 10, 2021, especially tenants allowing self-service or trial-user algorithm creation. Current exposure is unclear from the provided sources.

Exploitation context

The public description says a user could register, authenticate, and create a crafted Algorithm to achieve RCE. CISA KEV is false, and no provided source states active exploitation in the wild.

Researcher notes

Evidence is sparse: one Full Disclosure reference and CVE metadata. No CVSS, CWE, CPE, patch advisory, or exploit-in-the-wild confirmation is included. Avoid assuming impact beyond Algorithmia MSOL SaaS before October 10, 2021.

Mitigation direction

  • Confirm with Algorithmia/vendor records whether the SaaS fix was applied after October 10, 2021.
  • Review tenant settings for who can create and run algorithms.
  • Check vendor guidance or support channels for any retroactive remediation or incident indicators.
  • Audit historical accounts, trial users, and algorithm submissions around the exposure window.

Validation and detection

  • Inventory whether Algorithmia MSOL SaaS was used before October 10, 2021.
  • Request vendor confirmation of tenant patch status and relevant security logs.
  • Review historical algorithm creation events for unusual or unapproved activity.
  • Verify access controls around algorithm creation and execution are still appropriate.
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-2021-42951 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
1ADP providers
2Source links

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

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.