How severe is CVE-2020-27822?

CVE-2020-27822 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2020-27822 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-27822?

CVE-2020-27822 primarily affects Redhat Wildfly. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-27822?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-27822 published?

CVE-2020-27822 was published on 2020-12-08 and last updated on 2026-06-17.

CVE-2020-27822

CVE-2020-27822 is a medium-severity vulnerability in Redhat Wildfly with a CVSS 3.x base score of 5.9. 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-401.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 7.1
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-401
Affected product: Redhat Wildfly
Published: 2020-12-08
Last modified: 2026-06-17

Description

A flaw was found in Wildfly affecting versions 19.0.0.Final, 19.1.0.Final, 20.0.0.Final, 20.0.1.Final, and 21.0.0.Final. When an application uses the OpenTracing API's java-interceptors, there is a possibility of a memory leak. This flaw allows an attacker to impact the availability of the server. The highest threat from this vulnerability is to system availability.

Frequently asked questions

What is CVE-2020-27822?: A flaw was found in Wildfly affecting versions 19.0.0.Final, 19.1.0.Final, 20.0.0.Final, 20.0.1.Final, and 21.0.0.Final. When an application uses the OpenTracing API's java-interceptors, there is a possibility of a memory leak. This flaw allows an attacker to impact the availability of the server. The highest threat from this vulnerability is to system availability.
How severe is CVE-2020-27822?: CVE-2020-27822 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-27822 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-27822?: CVE-2020-27822 primarily affects Redhat Wildfly. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-27822?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-27822 published?: CVE-2020-27822 was published on 2020-12-08 and last updated on 2026-06-17.

References

https://bugzilla.redhat.com/show_bug.cgi?id=1904060

Affected products (5)

cpe:2.3:a:redhat:wildfly:19.0.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:wildfly:19.1.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:wildfly:20.0.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:wildfly:20.0.1:*:*:*:*:*:*:*
cpe:2.3:a:redhat:wildfly:21.0.0:*:*:*:*:*:*:*

More vulnerabilities in Redhat Wildfly

CVE-2018-10683 — Critical (CVSS 9.8): An issue was discovered in WildFly 10.1.2.Final. In the case of a default installation without a security realm…
CVE-2019-14887 — Critical (CVSS 9.1): A flaw was found when an OpenSSL security provider is used with Wildfly, the 'enabled-protocols' value in the Wildfly…
CVE-2019-3894 — High (CVSS 8.8): It was discovered that the ElytronManagedThread in Wildfly's Elytron subsystem in versions from 11 to 16 stores a…
CVE-2022-1278 — High (CVSS 7.5): A flaw was found in WildFly, where an attacker can see deployment names, endpoints, and any other data the trace…
CVE-2020-10718 — High (CVSS 7.5): A flaw was found in Wildfly before wildfly-embedded-13.0.0.Final, where the embedded managed process API has an exposed…
CVE-2020-10740 — Medium (CVSS 6.6): A vulnerability was found in Wildfly in versions before 20.0.0.Final, where a remote deserialization attack is possible…

All CVEs affecting Redhat Wildfly →

Other CWE-401 (Missing Release of Memory after Effective Lifetime) vulnerabilities

CVE-2026-46289 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: lib/scatterlist: fix length calculations in…
CVE-2025-39948 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: ice: fix Rx page leak on multi-buffer frames The…
CVE-2025-21954 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: netmem: prevent TX of unreadable skbs Currently…
CVE-2024-57947 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_set_pipapo: fix initial map…
CVE-2024-56779 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: nfsd: fix nfs4_openowner leak when concurrent…
CVE-2024-36911 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: hv_netvsc: Don't free decrypted memory In CoCo…

Browse all CWE-401 (Missing Release of Memory after Effective Lifetime) vulnerabilities →