How severe is CVE-2021-37425?

CVE-2021-37425 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.

Is CVE-2021-37425 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 66% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-37425?

CVE-2021-37425 primarily affects Altova Mobiletogether Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-37425?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-37425 published?

CVE-2021-37425 was published on 2021-08-10 and last updated on 2026-06-17.

CVE-2021-37425

CVE-2021-37425 is a critical-severity vulnerability in Altova Mobiletogether Server with a CVSS 3.x base score of 9.1. Its EPSS exploit-prediction score of 66% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-611.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v2: 6.4
EPSS exploit prediction: 66% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-611
Affected product: Altova Mobiletogether Server
Published: 2021-08-10
Last modified: 2026-06-17

Description

Altova MobileTogether Server before 7.3 SP1 allows XXE attacks, such as an InfoSetChanges/Changes attack against /workflowmanagement, or reading mobiletogetherserver.cfg and then reading the certificate and private key.

Frequently asked questions

What is CVE-2021-37425?: Altova MobileTogether Server before 7.3 SP1 allows XXE attacks, such as an InfoSetChanges/Changes attack against /workflowmanagement, or reading mobiletogetherserver.cfg and then reading the certificate and private key.
How severe is CVE-2021-37425?: CVE-2021-37425 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.
Is CVE-2021-37425 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 66% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-37425?: CVE-2021-37425 primarily affects Altova Mobiletogether Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-37425?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-37425 published?: CVE-2021-37425 was published on 2021-08-10 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:altova:mobiletogether_server:*:*:*:*:*:*:*:*
cpe:2.3:a:altova:mobiletogether_server:7.3:-:*:*:*:*:*:*

More vulnerabilities in Altova Mobiletogether Server

CVE-2021-38490 — High (CVSS 7.5): Altova MobileTogether Server before 7.3 SP1 allows XML exponential entity expansion, a different vulnerability than…

All CVEs affecting Altova Mobiletogether Server →

Other CWE-611 (Improper Restriction of XML External Entity Reference (XXE)) vulnerabilities

CVE-2022-22486 — Critical (CVSS 10.0): IBM Tivoli Workload Scheduler 9.4, 9.5, and 10.1 is vulnerable to an XML External Entity Injection (XXE) attack when…
CVE-2019-14678 — Critical (CVSS 10.0): SAS XML Mapper 9.45 has an XML External Entity (XXE) vulnerability that can be leveraged by malicious attackers in…
CVE-2015-9280 — Critical (CVSS 10.0): MailEnable before 8.60 allows XXE via an XML document in the request.aspx Options parameter.
CVE-2018-1000838 — Critical (CVSS 10.0): autopsy version <= 4.9.0 contains a XML External Entity (XXE) vulnerability in CaseMetadata XML Parser that can result…
CVE-2018-1000837 — Critical (CVSS 10.0): UML Designer version <= 8.0.0 contains a XML External Entity (XXE) vulnerability in XML parser for plugins that can…
CVE-2018-1000835 — Critical (CVSS 10.0): KeePassDX version <= 2.5.0.0beta17 contains a XML External Entity (XXE) vulnerability in kdbx file parser that can…

Browse all CWE-611 (Improper Restriction of XML External Entity Reference (XXE)) vulnerabilities →