Which products and versions are affected by CVE-2019-13608?

Affected: Storefront Server (Citrix). The full list is in the CVE brief.

Is CVE-2019-13608 being exploited in the wild?

It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jan 26, 2021 and is known to be used in ransomware campaigns.

Is CVE-2019-13608 in the CISA KEV catalog?

Yes. It was added on Nov 3, 2021 with a federal remediation due date of May 3, 2022.

Is there a public exploit for CVE-2019-13608?

Public exploit code is available.

Is there a fix for CVE-2019-13608?

Fixed versions are available, including Storefront Server 1903.

How urgently should CVE-2019-13608 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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Vulnerability Intelligence

CVE-2019-13608

HighExploitedPublic exploit

Citrix StoreFront Server before 1903, 7.15 LTSR before CU4 (3.12.4000), and 7.6 LTSR before CU8 (3.0.8000) allows XXE attacks.

Published Aug 29, 2019 · Updated Nov 6, 2025

Key Facts

Patch immediately

CVE-2019-13608 is a high-severity vulnerability (CVSS 7.5 v3.1) affecting Storefront Server (Citrix).
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jan 26, 2021 and is known to be used in ransomware campaigns. Public exploit code is available.
EPSS estimates a 30% probability of exploitation in the next 30 days.
Fixed versions are available, including Storefront Server 1903.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

7.5

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS (30-day exploit likelihood)

30%

Higher than 98.1% of all scored CVEs

Exploited in the wild

Yes

4 catalog listings, used by ransomware

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2019-13608 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Citrix StoreFront Server before 1903, 7.15 LTSR before CU4 (3.12.4000), and 7.6 LTSR before CU8 (3.0.8000) allows XXE attacks.

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
CISA KEV	Nov 3, 2021	May 3, 2022	Known
Industry KEV feed	Jan 26, 2021	May 3, 2022	Known
CIRCL KEV	Nov 3, 2021	May 3, 2022	Known
ENISA EUVD	Nov 3, 2021	n/a	Not reported

Required action: Apply updates per vendor instructions.

Affected Products

1 affected entries in total

Product	Affected versions	Fixed in
Storefront ServerCitrix	See advisory	1903

Patched Releases

Storefront Server

1903

Timeline

Publicly disclosed
Aug 29, 2019
Added to Industry KEV feed
Jan 26, 2021
Added to CISA KEV
Nov 3, 2021
Added to CIRCL KEV
Nov 3, 2021
Added to ENISA EUVD
Nov 3, 2021
Last updated
Nov 6, 2025

Weakness Type

CWE-611 Improper Restriction of XML External Entity Reference

References

advisoryhttps://support.citrix.com/article/CTX251988
exploitVulnCheck exploitation report
exploitVulnCheck exploitation report
exploitVulnCheck exploitation report
exploitVulnCheck exploitation report

1 more references in the full CVE brief

FAQ

Common Questions.

Citrix StoreFront Server before 1903, 7.15 LTSR before CU4 (3.12.4000), and 7.6 LTSR before CU8 (3.0.8000) allows XXE attacks.
Affected: Storefront Server (Citrix). The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jan 26, 2021 and is known to be used in ransomware campaigns.
Yes. It was added on Nov 3, 2021 with a federal remediation due date of May 3, 2022.
Public exploit code is available.
Fixed versions are available, including Storefront Server 1903.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

Is CVE-2019-13608 Running On Your Attack Surface?

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