CVE-2017-9233

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

8.74% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 94.7% of scored records. A rank, not a probability.

NVD base score

7.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2017-07-25 20:00Z9 YR AGO

Last updated

2024-08-05 17:02Z2 YR AGO

Reserved

2017-05-26

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-611Improper Restriction of XML External Entity ReferenceBase
• CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')Base

Data version

5.1

Document digest

501206142f21e2b7d07b85d1a6c302e5882da661c756b9a935b9e6da6787c8cf

• support.apple.comhttps://support.apple.com/HT208144x_refsource_CONFIRM
• libexpat.github.iohttps://libexpat.github.io/doc/cve-2017-9233/x_refsource_CONFIRM
• github.comhttps://github.com/libexpat/libexpat/blob/master/expat/Changesx_refsource_CONFIRM
• www.securitytracker.com1039427http://www.securitytracker.com/id/1039427vdb-entryx_refsource_SECTRACK
• support.apple.comhttps://support.apple.com/HT208113x_refsource_CONFIRM
• support.apple.comhttps://support.apple.com/HT208112x_refsource_CONFIRM
• support.apple.comhttps://support.apple.com/HT208115x_refsource_CONFIRM
• www.debian.orgDSA-3898http://www.debian.org/security/2017/dsa-3898vendor-advisoryx_refsource_DEBIAN
• www.securityfocus.com99276http://www.securityfocus.com/bid/99276vdb-entryx_refsource_BID
• www.openwall.com[oss-security] 20170618 Expat 2.2.1 security fixeshttp://www.openwall.com/lists/oss-security/2017/06/17/7mailing-listx_refsource_MLIST
• support.f5.comhttps://support.f5.com/csp/article/K03244804x_refsource_CONFIRM
• lists.apache.org[bookkeeper-issues] 20210628 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[bookkeeper-issues] 20210629 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3Emailing-listx_refsource_MLIST