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CVE Record

CVE-2020-7778: Prototype Pollution

This affects the package systeminformation before 4.30.2. The attacker can overwrite the properties and functions of an object, which can lead to executing OS commands.

HighCVSS 7.3Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2020-7778 is a prototype pollution flaw in the npm package systeminformation before 4.30.2. A malicious input path could let an attacker alter object behavior and potentially reach OS command execution. This matters most where Node.js services expose system information features to untrusted users or data.

Executive priority

Prioritize remediation for internet-facing or multi-tenant Node.js services using systeminformation. The issue is high severity, unauthenticated by CVSS, and has possible command execution consequences, but the provided sources do not confirm active exploitation.

Technical view

The source bundle identifies systeminformation versions before 4.30.2 as affected. The issue allows object property and function overwrite through prototype pollution, with possible OS command execution impact. CVSS 3.1 is 7.3, network-reachable, low-complexity, unauthenticated, and no user interaction required.

Likely exposure

Exposure is likely in Node.js applications that directly or transitively depend on systeminformation before 4.30.2. Risk increases when application routes, APIs, or background jobs pass attacker-controlled values into affected package functionality.

Exploitation context

The bundle references public vulnerability details and a gist, but does not show CISA KEV listing or confirmed active exploitation. Treat exploitability as plausible from the CVSS vector and description, but do not assume exploitation in the wild without separate evidence.

Researcher notes

Primary records identify systeminformation before 4.30.2 and link to affected code and fixing commits. The bundle does not include CPEs or CWE mapping. Focus validation on dependency reachability and whether vulnerable code paths process attacker-controlled data in each deployment.

Mitigation direction

  • Upgrade systeminformation to 4.30.2 or later.
  • Regenerate and redeploy lockfiles after dependency updates.
  • Check vendor advisories for any additional remediation guidance.
  • Reduce exposure of system information endpoints to trusted callers.
  • Validate or constrain user-controlled inputs reaching this package.

Validation and detection

  • Review package manifests and lockfiles for systeminformation versions before 4.30.2.
  • Check SBOMs for direct and transitive systeminformation dependencies.
  • Identify routes or jobs that call systeminformation with external input.
  • Run dependency scanning against production build artifacts.
  • Confirm deployed instances use the remediated dependency version.
Prepared
Confidence
high
Sources
6

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

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CVE-2020-7778 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.3 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O

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.

1CVSS vectors
0Timeline events
0ADP providers
6Source links

CVSS vector scores

1 official score

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
7.3CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O3.93.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

7.3High
CVSS 3.1 vector shape for CVE-2020-7778Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O

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

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/asysteminformationunspecifiedListed
Weakness

CWE details

No CWE listed

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