CVE-2023-4535: fedoraproject fedora Out-of-bounds Read
Vulnerability summary
CVE-2023-4535 is a medium (CVSS 4.5) Out-of-bounds Read vulnerability in fedoraproject fedora. EPSS estimates a 0.52% chance of exploitation in the next 30 days, higher than 42.8% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 2 · Related 2Timeline
- 06-11-2023PublishedVulnerability first disclosed.
- 21-11-2025Last modifiedVulnerability information updated.
Description
An out-of-bounds read vulnerability was found in OpenSC packages within the MyEID driver when handling symmetric key encryption. Exploiting this flaw requires an attacker to have physical access to the computer and a specially crafted USB device or smart card. This flaw allows the attacker to manipulate APDU responses and potentially gain unauthorized access to sensitive data, compromising the system's security.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · DebianEcosystem advisory · calculated3.8LowCVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:LDiffers
- NVDNIST3.8LowCVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:LDiffers
EPSS trend
Probability
0.52%
Chance of exploitation in the next 30 days
Percentile
43%
Versus all other CVEs
30-day change
+0.02 pp
From 0.50% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian1 product
- opensc< 0.23.0-0.3+deb12u1 | < 0.23.0-2
Fedoraproject1 product
- fedoraEOL38 | 39
Opensc_project1 product
- opensc0.23.0 | 0.23.0:rc1 | 0.23.0:rc2
Redhat1 product
4 vendors · 4 products
References
11 links- github.com/OpenSC/OpenSC/releases/tag/0.24.0-rc1Release Notes
- github.com/OpenSC/OpenSC/wiki/OpenSC-security-advisoriesVendor Advisory
- lists.fedoraproject.org/archives/…X Transferred
- lists.fedoraproject.org/archives/…X Transferred
