CVE-2021-40881

CRITICAL

An issue in the BAT file parameters of PublicCMS v4.0 allows attackers to execute arbitrary code.

Affects 1 product across 1 vendor.

CVSS 3.19.8
EPSS1.6%
Percentile75th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity, no authentication required, no user interaction needed, impact contained to the vulnerable component, full confidentiality impact, full integrity impact, full availability impact.
◆ AI Analysis — automated analysis, not human-reviewed

A critical vulnerability in PublicCMS v4.0 allows attackers to execute arbitrary code through malicious BAT file parameters, posing a significant risk to system integrity and security.

BSID: BS-2021-GLOBAL-074710-C • Model: /workspace/models/qwen2.5-coder-32b-instruct-bf16 • Confidence: HIGH

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Frequently Asked Questions
What is CVE-2021-40881?
A critical vulnerability in PublicCMS v4.0 allows attackers to execute arbitrary code through malicious BAT file parameters, posing a significant risk to system integrity and security.
What is the CVSS score for CVE-2021-40881?
CVE-2021-40881 has CVSS 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS: 1.6%.
Is CVE-2021-40881 actively exploited?
No confirmed active exploitation of CVE-2021-40881 as of 2026-05-30.
How do I remediate CVE-2021-40881?
Priority: IMMEDIATE.
What systems are affected by CVE-2021-40881?
CVE-2021-40881 affects Publiccms Publiccms.
Vulnerability Details
CVE IDCVE-2021-40881
BSIDBS-2021-GLOBAL-074710-C BreachSpider Global ID
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published2021-09-15
Last Modified2024-11-21
ICS Relevance0%
SourceNVD
Official Description

An issue in the BAT file parameters of PublicCMS v4.0 allows attackers to execute arbitrary code.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

The vulnerability exists in the way PublicCMS handles BAT file parameters, enabling attackers to inject and execute arbitrary commands on the server.

Exploitation Likelihood: CRITICAL

Affected Products
VendorProductAffected Versions
Publiccms Publiccms 4.0
Remediation

No official vendor advisory link on record. See the CVE record →

Threat Intelligence
● Threat Intelligence Validated: October 2026 | Threat Age: 1856 Days
CISA known-exploitedNot in KEV catalog
Public ExploitNot confirmed
PoC CodeNot confirmed
AI Enrichment Record — provenance & audit hash
Model/workspace/models/qwen2.5-coder-32b-instruct-bf16
ConfidenceHIGH
Enriched At2026-05-24
SHA-512 Audit Hash0162359f46ce0542bb56453d0d997938308fc77297dc420ee058d8828964afa6af401fed0c070ff30fc94acd55957f736acedc03d513040301a7a036869c1fc1
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