CVE-2021-28700: debian debian_linux
CVSS: 6.8v2.0MediumModified
AliasesALPINE-CVE-2021-28700UBUNTU-CVE-2021-28700DEBIAN-CVE-2021-28700
Published 27-08-2021Last modified 03-08-2024
Vulnerability summary
CVE-2021-28700 is a medium (CVSS 6.8) vulnerability in debian debian_linux. EPSS estimates a 1.87% chance of exploitation in the next 30 days, higher than 79% of scored vulnerabilities.
CVSS score
6.8/10
010
Medium · v2.0 (NVD)EPSS score
1.87%
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 7 · Related 6Timeline
- 27-08-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
xen/arm: No memory limit for dom0less domUs The dom0less feature allows an administrator to create multiple unprivileged domains directly from Xen. Unfortunately, the memory limit from them is not set. This allow a domain to allocate memory beyond what an administrator originally configured.
CVSS metrics
5 scores · 4 sources · 2 versionsMedium 4.9Preferred score · OSV · Alpine (Ecosystem advisory) · calculated from vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:HSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated4.9MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated4.9MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
- NVDNIST4.9MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Medium 6.8Preferred score · NVD (NIST)
AV:N/AC:L/Au:S/C:N/I:N/A:CSourcesSingle source
EPSS trend
Probability
1.87%
Chance of exploitation in the next 30 days
Percentile
79%
Versus all other CVEs
30-day change
0.00 pp
From 1.87% on 19-09-2026
19-09-202619-10-2026
EPSS score1.87%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian2 products
- xen< 4.14.3-1
- debian_linuxEOL11.0
Alpine1 product
- xen≥ 4.12.0, < 4.13.3-r2 | ≥ 4.12.0, < 4.14.2-r0 | ≥ 4.12.0, < 4.15.0-r2
Fedoraproject1 product
- fedoraEOL33 | 34 | 35
Ubuntu1 product
- xenAll versions (No fix recorded)
Xen1 product
- xen≥ 4.12.0, < 4.13.0 | ≥ 4.13.x, < unspecified | ≥ 4.12.0 (No fix recorded)
5 vendors · 6 products
