CVE-2023-4527

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

1.51% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 72.7% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

2023-09-18 16:32Z2 YR AGO

Last updated

2026-07-14 11:54Z1 MO AGO

Reserved

2023-08-24

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Medium (CVSS 6.5)

CNA CVSS vector

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

Weaknesses

• CWE-121Stack-based Buffer OverflowVariant
• CWE-125Out-of-bounds ReadBase

Data version

5.2

Document digest

080ae430df2c144ceebfc8b96105063e59da24d090c0830670063928561dcb0e

• access.redhat.comRHSA-2023:5453https://access.redhat.com/errata/RHSA-2023:5453vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2023:5455https://access.redhat.com/errata/RHSA-2023:5455vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2023-4527vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2234712https://bugzilla.redhat.com/show_bug.cgi?id=2234712issue-trackingx_refsource_REDHAT
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2023/09/25/1
• lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4DBUQRRPB47TC3NJOUIBVWUGFHBJAFDL/
• lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DFG4P76UHHZEWQ26FWBXG76N2QLKKPZA/
• lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NDAQWHTSVOCOZ5K6KPIWKRT3JX4RTZUR/
• security.gentoo.orghttps://security.gentoo.org/glsa/202310-03
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20231116-0012/
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-831302.html
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-082556.html