CVE-2021-42782: fedoraproject fedora
CVSS: 5.3v3.1MediumModified
AliasesUBUNTU-CVE-2021-42782DEBIAN-CVE-2021-42782
Published 18-04-2022Last modified 03-11-2025
Vulnerability summary
CVE-2021-42782 is a medium (CVSS 5.3) vulnerability in fedoraproject fedora. EPSS estimates a 2.78% chance of exploitation in the next 30 days, higher than 86.1% of scored vulnerabilities.
CVSS score
5.3/10
010
Medium · v3.1 (NVD)EPSS score
2.78%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 11 · Related 8Timeline
- 18-04-2022PublishedVulnerability first disclosed.
- 03-11-2025Last modifiedVulnerability information updated.
Description
Stack buffer overflow issues were found in Opensc before version 0.22.0 in various places that could potentially crash programs using the library.
CVSS metrics
4 scores · 3 sources · 2 versionsMedium 5.3Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- OSV · DebianEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
2.78%
Chance of exploitation in the next 30 days
Percentile
86%
Versus all other CVEs
30-day change
0.00 pp
From 2.78% on 19-09-2026
19-09-202619-10-2026
EPSS score2.78%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferThe product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
Debian1 product
- opensc< 0.22.0-1
Fedoraproject1 product
- fedoraEOL33
Opensc_project1 product
- opensc< 0.22.0
Ubuntu1 product
- openscAll versions (No fix recorded) | < 0.20.0-3ubuntu0.1~esm4
4 vendors · 4 products
