What is the CVSS score of CVE-2018-3881?

CVE-2018-3881 has a CVSS 3.1 base score of 9.4 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H. EPSS exploitation probability: 1.2%.

Is there a public PoC exploit available for CVE-2018-3881?

Yes, a public proof-of-concept exploit is available for CVE-2018-3881. Prioritise patching immediately. EPSS: 1.2%.

Focalscope CVE-2018-3881

CRITICAL

Improper Restriction of XML External Entity Reference (CWE-611)

2018-08-01 talos-cna@cisco.com

XXE Focalscope

9.4

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.4 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

Low

Availability

High

Lifecycle Timeline

CVE Published

Aug 01, 2018 - 20:29 nvd

CRITICAL 9.4

DescriptionNVD

An exploitable unauthenticated XML external injection vulnerability was identified in FocalScope v2416. A unauthenticated attacker could submit a specially crafted web request to FocalScope's server that could cause an XXE, and potentially result in data compromise.

AnalysisAI

An exploitable unauthenticated XML external injection vulnerability was identified in FocalScope v2416. Rated critical severity (CVSS 9.4), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as XML External Entity (XXE) (CWE-611), which allows attackers to read arbitrary files or perform SSRF through XML processing. An exploitable unauthenticated XML external injection vulnerability was identified in FocalScope v2416. A unauthenticated attacker could submit a specially crafted web request to FocalScope's server that could cause an XXE, and potentially result in data compromise. Affected products include: Focalscope.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Disable external entity processing in XML parsers, use JSON instead of XML where possible.