CVE-2023-4535
Opensc: out-of-bounds read in myeid driver handling encryption using symmetric keys
- 4.5MediumCVSS base score
- 0.49%Exploitation in 30 daysEPSS · top 58% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By redhat
- 2 months later
· 2 months later
Published
- 3 years later
· 3 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| redhatCNA (assigner) | 3.1 | Medium4.5 | CVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:L |
| NVDNVD · Modified | 3.1 | Low3.8 | CVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L |
- EPSS (exploitation in 30 days)
- 0.49% · top 58% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.5.
Affected products
Red Hat · Red Hat Enterprise Linux 9
- unaffected 0:0.23.0-3.el9_3 – < *
Red Hat · Red Hat Enterprise Linux 7
All versions: unaffected
Red Hat · Red Hat Enterprise Linux 8
All versions: unaffected
References
References9
- RHSA-2023:7879 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://access.redhat.com/security/cve/CVE-2023-4535 (opens in a new tab)vdb-entryx_refsource_REDHATx_transferred
- RHBZ#2240914 (opens in a new tab)issue-trackingx_refsource_REDHATx_transferred
- https://github.com/OpenSC/OpenSC/commit/f1993dc4e0b33050b8f72a3558ee88b24c4063b2 (opens in a new tab)x_transferred
- https://github.com/OpenSC/OpenSC/issues/2792#issuecomment-1674806651 (opens in a new tab)x_transferred
- https://github.com/OpenSC/OpenSC/releases/tag/0.24.0-rc1 (opens in a new tab)x_transferred
- https://github.com/OpenSC/OpenSC/wiki/OpenSC-security-advisories (opens in a new tab)x_transferred
- https://lists.fedoraproject.org/archives/list/[email protected]/message/3CPQOMCDWFRBMEFR5VK4N5MMXXU42ODE/ (opens in a new tab)x_transferred
- https://lists.fedoraproject.org/archives/list/[email protected]/message/GLYEFIBBA37TK3UNMZN5NOJ7IWCIXLQP/ (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2023-54390 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2023-4535)Record last updated .