How severe is CVE-2020-25912?

CVE-2020-25912 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-2020-25912 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-25912?

CVE-2020-25912 affects Getsymphony Symphony. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-25912?

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-2020-25912 published?

CVE-2020-25912 was published on 2021-10-31 and last updated on 2026-07-09.

CVE-2020-25912

CVE-2020-25912 is a critical-severity vulnerability in Getsymphony Symphony with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. 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: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-611
Affected product: Getsymphony Symphony
Published: 2021-10-31
Last modified: 2026-07-09

Description

A XML External Entity (XXE) vulnerability was discovered in symphony\lib\toolkit\class.xmlelement.php in Symphony 2.7.10 which can lead to an information disclosure or denial of service (DOS).

Frequently asked questions

What is CVE-2020-25912?: A XML External Entity (XXE) vulnerability was discovered in symphony\lib\toolkit\class.xmlelement.php in Symphony 2.7.10 which can lead to an information disclosure or denial of service (DOS).
How severe is CVE-2020-25912?: CVE-2020-25912 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-2020-25912 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-25912?: CVE-2020-25912 affects Getsymphony Symphony. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-25912?: 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-2020-25912 published?: CVE-2020-25912 was published on 2021-10-31 and last updated on 2026-07-09.

References

https://github.com/symphonycms/symphonycms/issues/2924

Affected products (1)

cpe:2.3:a:getsymphony:symphony:2.7.10:*:*:*:*:*:*:*

More vulnerabilities in Getsymphony Symphony

CVE-2017-7694 — High (CVSS 8.8): Remote Code Execution vulnerability in symphony/content/content.blueprintsdatasources.php in Symphony CMS through…
CVE-2016-4309 — High (CVSS 7.5): Session fixation vulnerability in Symphony CMS 2.6.7, when session.use_only_cookies is disabled, allows remote…
CVE-2010-3458 — High (CVSS 7.5): SQL injection vulnerability in lib/toolkit/events/event.section.php in Symphony CMS 2.0.7 and 2.1.1 allows remote…
CVE-2010-2143 — High (CVSS 7.5): Directory traversal vulnerability in index.php in Symphony CMS 2.0.7 allows remote attackers to read arbitrary files…
CVE-2013-7346 — Medium (CVSS 6.8): Cross-site request forgery (CSRF) vulnerability in Symphony CMS before 2.3.2 allows remote attackers to hijack the…
CVE-2013-2559 — Medium (CVSS 6.5): SQL injection vulnerability in Symphony CMS before 2.3.2 allows remote authenticated users to execute arbitrary SQL…

All CVEs affecting Getsymphony Symphony →

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 →