CVE-2021-0089: debian debian_linux Observable Discrepancy
CVSS: 6.5v3.1MediumModified
AliasesALPINE-CVE-2021-0089UBUNTU-CVE-2021-0089DEBIAN-CVE-2021-0089
Published 09-06-2021Last modified 03-08-2024
Vulnerability summary
CVE-2021-0089 is a medium (CVSS 6.5) Observable Discrepancy vulnerability in debian debian_linux. EPSS estimates a 0.36% chance of exploitation in the next 30 days, higher than 27.9% of scored vulnerabilities.
CVSS score
6.5/10
010
Medium · v3.1 (NVD)EPSS score
0.36%
0%100%
Low · -0.02 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 12 · Related 11Timeline
- 09-06-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
Observable response discrepancy in some Intel(R) Processors may allow an authorized user to potentially enable information disclosure via local access.
CVSS metrics
5 scores · 4 sources · 2 versionsMedium 6.5Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:NSourcesAll 4 agree
- OSV · AlpineEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
- OSV · UbuntuEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
- OSV · DebianEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Low 2.1Preferred score · NVD (NIST)
AV:L/AC:L/Au:N/C:P/I:N/A:NSourcesSingle source
EPSS trend
Probability
0.36%
Chance of exploitation in the next 30 days
Percentile
28%
Versus all other CVEs
30-day change
-0.02 pp
From 0.37% on 19-09-2026
19-09-202619-10-2026
EPSS score0.36%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Intel5 products
Debian2 products
- xen< 4.14.2+25-gb6a8c4f72d-1
- debian_linuxEOL10.0
Alpine1 product
- xen< 4.13.3-r1 | < 4.14.1-r3 | < 4.15.0-r1
Fedoraproject1 product
- fedoraEOL33 | 34
Ubuntu1 product
- xenAll versions (No fix recorded)
5 vendors · 10 products
References
13 links- www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00516.htmlX Refsource MISCREPORTVendor Advisory
- www.openwall.com/lists/oss-security/2021/06/10/1Mailing ListX Refsource MLISTREPORTThird Party Advisory
- www.openwall.com/lists/oss-security/2021/06/10/10Mailing ListX Refsource MLISTREPORTThird Party Advisory
- www.openwall.com/lists/oss-security/2021/06/10/11Mailing ListX Refsource MLISTREPORTThird Party Advisory
