CVE-2023-45853

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 ImpacttotalSuccessful exploitation gives total 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

3.18% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 86.9% of scored records. A rank, not a probability.

NVD base score

9.8 (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:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-07-14.

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

2023-10-14 00:00Z2 YR AGO

Last updated

2026-07-14 12:07Z1 MO AGO

Reserved

2023-10-14

Assigning CNA

mitre

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

Weaknesses

• CWE-190Integer Overflow or WraparoundBase

Data version

5.2

Document digest

b72cccbb5e3f7957047e08aefb500ebcaaf2cde1d7c5a90d0b2754e52819bcb4

• github.comhttps://github.com/madler/zlib/pull/843
• www.winimage.comhttps://www.winimage.com/zLibDll/minizip.html
• github.comhttps://github.com/madler/zlib/blob/ac8f12c97d1afd9bafa9c710f827d40a407d3266/contrib/README.contrib#L1-L4
• chromium.googlesource.comhttps://chromium.googlesource.com/chromium/src/+/de29dd6c7151d3cd37cb4cf0036800ddfb1d8b61
• chromium.googlesource.comhttps://chromium.googlesource.com/chromium/src/+/d709fb23806858847131027da95ef4c548813356
• www.openwall.com[oss-security] 20231020 CVE-2023-45853: overflows in MiniZip in zlib through 1.3http://www.openwall.com/lists/oss-security/2023/10/20/9mailing-list
• lists.debian.org[debian-lts-announce] 20231127 [SECURITY] [DLA 3670-1] minizip security updatehttps://lists.debian.org/debian-lts-announce/2023/11/msg00026.htmlmailing-list
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20231130-0009/
• pypi.orghttps://pypi.org/project/pyminizip/#history
• security.gentoo.orgGLSA-202401-18https://security.gentoo.org/glsa/202401-18vendor-advisory
• www.openwall.com[oss-security] 20240124 Re: CVE-2023-45853: overflows in MiniZip in zlib through 1.3http://www.openwall.com/lists/oss-security/2024/01/24/10mailing-list
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-398330.html
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-769027.html
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-470355.html