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CVE Record

CVE-2021-39274: In XeroSecurity Sn1per 9.0 (free version), insecure directory permissions (0777) are set during installatio...

In XeroSecurity Sn1per 9.0 (free version), insecure directory permissions (0777) are set during installation, allowing an unprivileged user to modify the main application and the application configuration file. This results in arbitrary code execution with root privileges.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

Sn1per 9.0 free version can be installed with directories set writable by everyone. On a shared or compromised host, a low-privileged user could change the application or configuration and cause code to run as root. This is mainly a local privilege-escalation risk, not evidence of remote internet exploitation.

Executive priority

Prioritize remediation where Sn1per runs on shared, production, or sensitive security-operations hosts. The business concern is local movement from a weak account to root, which can undermine the security tooling host itself.

Technical view

The CVE describes insecure 0777 directory permissions during Sn1per 9.0 free installation. Those permissions let an unprivileged local user modify the main application and configuration file, leading to arbitrary code execution with root privileges. The supplied record does not include CVSS, CWE, CPEs, or a confirmed fixed version.

Likely exposure

Exposure is likely limited to systems where XeroSecurity Sn1per 9.0 free version was installed, especially multi-user Linux hosts or systems where lower-privileged accounts may be compromised.

Exploitation context

The source bundle does not show CISA KEV listing or confirmed active exploitation. A public GitHub reference exists for the CVE, so defenders should assume technical details may be accessible, but not treat this as proven in-the-wild exploitation.

Researcher notes

Evidence is sparse: the CVE description is clear about the permission flaw and root-code-execution impact, but the supplied sources do not provide CVSS, CPE mapping, CWE classification, patch confirmation, or exploitation telemetry.

Mitigation direction

  • Check vendor releases and issue references for fixed versions or official guidance.
  • Restrict Sn1per host access to trusted administrators only.
  • Audit and remove world-writable permissions from Sn1per application and configuration paths.
  • Reinstall or upgrade Sn1per if vendor guidance identifies a corrected build.
  • Monitor Sn1per files and configuration for unexpected local changes.

Validation and detection

  • Inventory hosts for Sn1per 9.0 free version installations.
  • Inspect Sn1per application and configuration paths for 0777 permissions.
  • Review local user access on affected hosts.
  • Check file integrity history for unexpected Sn1per application or config modifications.
  • Confirm any remediation against vendor release notes or issue guidance.
Prepared
Confidence
medium
Sources
5

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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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.

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cve · low confidence lookup

CVE-2021-39274 mapping review

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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
0Timeline events
0ADP providers
4Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

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.