Security readout for executives and security teams
CVE-2019-3844 is a local privilege-boundary flaw in systemd's DynamicUser feature. A low-privileged local attacker could cause future services to inherit access risks when recycled group IDs are reused. The issue is not remotely exploitable based on the provided data, and CISA KEV does not list known exploitation. Exposure is most likely on Linux systems or appliances running affected systemd 242 packages with services using DynamicUser. The attacker needs local low-privileged access, and exploitation is high complexity. Systems without local user access or without affected DynamicUser service patterns have lower practical risk. Treat as a moderate Linux hardening issue. It is not a KEV-listed emergency, but it matters on multi-user servers, shared hosting, build systems, and appliances where local users or workloads are not fully trusted. Mitigation focus: Apply systemd updates from the operating system or appliance vendor advisory.; Review vendor guidance from Red Hat, Ubuntu, NetApp, or your distribution.; Identify services using DynamicUser and assess whether they rely on SUID or SGID behavior..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CWE-268: Exact CWE lookup
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Open ATT&CK lookupCVE-2019-3844 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 4.5 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L13.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
4.5MediumVector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3844CVE reference · x_refsource_CONFIRM
- https://security.netapp.com/advisory/ntap-20190619-0002/CVE reference · x_refsource_CONFIRM
- USN-4269-1CVE reference · vendor-advisory, x_refsource_UBUNTU
- [bookkeeper-issues] 20210628 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8CVE reference · mailing-list, x_refsource_MLIST
- [bookkeeper-issues] 20210629 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8CVE reference · mailing-list, x_refsource_MLIST
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Privilege Chaining
Privilege Chaining represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.