Security readout for executives and security teams
Plain-English summary
CVE-2019-4406 can let a highly privileged local actor disrupt IBM Spectrum Protect Backup-Archive Client availability. The business risk is interruption of backup or restore operations, not data theft or data modification based on the supplied CVSS vector.
Executive priority
Handle through normal vulnerability management with priority for backup infrastructure. Escalate if affected clients support critical recovery objectives or if privileged local access is broadly shared.
Technical view
IBM Spectrum Protect Backup-Archive Client 7.1 and 8.1 are affected by a denial-of-service issue caused by a timing problem in client and server TCP/IP communications. CVSS 3.0 is 4.4: local attack vector, high privileges required, low complexity, no confidentiality or integrity impact, high availability impact.
Likely exposure
Exposure is limited to environments running IBM Spectrum Protect Backup-Archive Client 7.1 or 8.1, including the versions listed in the bundle. The vector is local and requires high privileges, so broadly internet-facing exposure is not indicated by the sources.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation. The CVSS vector lists exploit code maturity as unproven. Treat this as an availability risk requiring validation, not as evidence of known in-the-wild exploitation.
Researcher notes
Key constraints are local access and high privileges. Impact is availability only per the supplied vector. The bundle names IBM X-Force ID 162477 but does not include specific fixed versions or workaround details, so remediation should be tied to IBM’s advisory.
Mitigation direction
- Check IBM advisory 1107777 for vendor-approved fix levels or mitigations.
- Upgrade affected Backup-Archive Client installations according to IBM guidance.
- Restrict privileged local access on systems running the client.
- Prioritize systems supporting critical backup and restore workflows.
- Monitor backup client availability and failed backup job trends.
Validation and detection
- Inventory endpoints running IBM Spectrum Protect Backup-Archive Client 7.1 or 8.1.
- Compare installed client versions against IBM advisory 1107777.
- Confirm whether vulnerable clients support critical recovery processes.
- Review local privileged account access on affected systems.
- Check backup job logs for unexplained client availability failures.
Public sources used
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
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2019-4406 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
- 4.4 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/PR:H/AC:L/I:N/C:N/A:H/S:U/AV:L/UI:N/E:U/RC:C/RL:O
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/PR:H/AC:L/I:N/C:N/A:H/S:U/AV:L/UI:N/E:U/RC:C/RL:O0.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
4.4MediumVector: CVSS:3.0/PR:H/AC:L/I:N/C:N/A:H/S:U/AV:L/UI:N/E:U/RC:C/RL:O
Source materials
- CVE List V5 sourceCVE List V5
- https://www.ibm.com/support/pages/node/1107777CVE reference · x_refsource_CONFIRM
- ibm-tsm-cve20194406-dos (162477)CVE reference · vdb-entry, x_refsource_XF
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.