What is the CVSS score of CVE-2023-27527?

CVE-2023-27527 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. EPSS exploitation probability: 0.3%.

Shinseiyo Sogo Soft CVE-2023-27527

HIGH

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

2023-05-10 vultures@jpcert.or.jp

XXE Shinseiyo Sogo Soft

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

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

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:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

CVE Published

May 10, 2023 - 06:15 nvd

HIGH 7.5

DescriptionNVD

Shinseiyo Sogo Soft (7.9A) and earlier improperly restricts XML external entity references (XXE). By processing a specially crafted XML file, arbitrary files on the PC may be accessed by an attacker.

AnalysisAI

Shinseiyo Sogo Soft (7.9A) and earlier improperly restricts XML external entity references (XXE). Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. 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. Shinseiyo Sogo Soft (7.9A) and earlier improperly restricts XML external entity references (XXE). By processing a specially crafted XML file, arbitrary files on the PC may be accessed by an attacker. Affected products include: Touki-Kyoutaku-Online Shinseiyo Sogo Soft.

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.