Security readout for executives and security teams
Plain-English summary
CVE-2019-13608 affects Citrix StoreFront Server and allows XML External Entity attacks. In business terms, an unauthenticated network attacker may be able to read sensitive information from vulnerable StoreFront deployments. CISA lists this CVE in KEV, so treat it as a real-world exploited issue, not a theoretical backlog item.
Executive priority
High priority. The issue enables confidentiality compromise without authentication and is listed in CISA KEV. Leadership should ensure StoreFront inventory, patch status, and external exposure are confirmed promptly, with vulnerable systems upgraded or isolated.
Technical view
Citrix StoreFront Server before 1903, 7.15 LTSR before CU4 (3.12.4000), and 7.6 LTSR before CU8 (3.0.8000) are affected. The weakness is CWE-611 XXE with CVSS 3.1 score 7.5: network-accessible, low complexity, no privileges, no user interaction, high confidentiality impact.
Likely exposure
Organizations running older Citrix StoreFront Server versions are exposed, particularly where the service is reachable over a network by untrusted users. The provided affected-products field is incomplete, but the CVE description names vulnerable StoreFront release lines and fixed thresholds.
Exploitation context
CISA KEV marks CVE-2019-13608 as known exploited. The provided sources do not include exploit mechanics, observed campaigns, indicators, or prevalence. Do not assume a specific threat actor or exploit path beyond KEV-confirmed exploitation.
Researcher notes
The source bundle establishes XXE, affected version thresholds, CVSS vector, CWE-611, and KEV status. It does not provide exploit details, indicators, vendor workaround text, or granular affected CPEs. Avoid claiming integrity or availability impact from the CVSS data provided.
Mitigation direction
- Upgrade Citrix StoreFront Server to 1903, 7.15 LTSR CU4, 7.6 LTSR CU8, or later.
- Review Citrix CTX251988 for vendor-approved remediation details.
- Prioritize internet-reachable StoreFront deployments first.
- Restrict network access where immediate upgrade is not possible.
- Track remediation against CISA KEV expectations if applicable.
Validation and detection
- Inventory all Citrix StoreFront Server instances and versions.
- Confirm no instance runs before 1903, 7.15 LTSR CU4, or 7.6 LTSR CU8.
- Identify which StoreFront services are reachable from untrusted networks.
- Review change records to confirm Citrix advisory remediation was applied.
- Escalate any vulnerable external deployment for immediate remediation.
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.
CWE-611: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2019-13608 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
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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.
CISA KEV status
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://support.citrix.com/article/CTX251988CVE reference · x_refsource_CONFIRM
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-13608CVE reference · government-resource
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.
Improper Restriction of XML External Entity Reference
Improper Restriction of XML External Entity Reference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.