CVE-2021-34193
Stack overflow vulnerability in OpenSC smart card middleware before 0.23 via crafted responses to APDUs.
02 Description
Stack overflow vulnerability in OpenSC smart card middleware before 0.23 via crafted responses to APDUs.
03 Exploitation and scoring
- 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
- 1.38% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 72.0% 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
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
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.
04 Metadata
- Published
- 2023-08-22 00:00Z3 YR AGO
- Last updated
- 2025-11-03 21:44Z11 MO AGO
- Reserved
- 2021-06-07
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-787Out-of-bounds WriteBase
- Data version
- 5.2
- Document digest
- c24ad2bf21a75bdbebe5a6f69710cdd15ae20a1c5de5fa07c65472a8262a6f0b
05 Affected products
06 References
- bugs.chromium.orghttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27719
- bugs.chromium.orghttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=30800
- bugs.chromium.orghttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=30112
- bugs.chromium.orghttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28768
- bugs.chromium.orghttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28855
- bugs.chromium.orghttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=32149
- bugs.chromium.orghttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28185
- bugs.chromium.orghttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=29912
- bugs.chromium.orghttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28843
- bugs.chromium.orghttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=31540
- bugs.chromium.orghttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28383
- bugs.chromium.orghttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=31448
- lists.debian.orghttps://lists.debian.org/debian-lts-announce/2024/12/msg00026.html
07 Fixed in
Debian 12
- opensc Fixed in 0.22.0-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- opensc Fixed in 0.22.0-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- opensc Fixed in 0.22.0-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.