HOME VULNERABILITIESCVE-2021-2161

MEDIUM

CVE-2021-2161

NVD-CWE-noinfoPublished: April 22, 2021· Updated: Jun 17, 2026

5.9

CVSS v3.1

Official Description

Vulnerability in the Java SE, Java SE Embedded, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Libraries). Supported versions that are affected are Java SE: 7u291, 8u281, 11.0.10, 16; Java SE Embedded: 8u281; Oracle GraalVM Enterprise Edition: 19.3.5, 20.3.1.2 and 21.0.0.2. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE, Java SE Embedded, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Java SE, Java SE Embedded, Oracle GraalVM Enterprise Edition accessible data. Note: This vulnerability applies to Java deployments that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. It can also be exploited by supplying untrusted data to APIs in the specified Component. CVSS 3.1 Base Score 5.9 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N).

Technical Analysis

CVE-2021-2161 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 5.9.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

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

Affected Vendors & Products

Debian1 product(s)

debian linux

Fedora1 product(s)

fedora

mcafee1 product(s)

epolicy orchestrator

netapp5 product(s)

active iq unified managerhci management nodesolidfirehci compute nodehci storage node

Oracle4 product(s)

jdkjregraalvmopenjdk

Source: NVD CPE · 24 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://www.oracle.com/security-alerts/cpuapr2021.html

PATCHhttps://www.oracle.com/security-alerts/cpuapr2021.html

ADVISORYhttps://docs.azul.com/core/zulu-openjdk/release-notes/april-2021.html#fixed-common-vulnerabilities-and-exposures

ADVISORYhttps://kc.mcafee.com/corporate/index?page=content&id=SB10366

ADVISORYhttps://lists.debian.org/debian-lts-announce/2021/04/msg00021.html

ADVISORYhttps://security.gentoo.org/glsa/202209-05

ADVISORYhttps://security.netapp.com/advisory/ntap-20210513-0001/

ADVISORYhttps://www.debian.org/security/2021/dsa-4899

ADVISORYhttps://docs.azul.com/core/zulu-openjdk/release-notes/april-2021.html#fixed-common-vulnerabilities-and-exposures

ADVISORYhttps://kc.mcafee.com/corporate/index?page=content&id=SB10366

ADVISORYhttps://lists.debian.org/debian-lts-announce/2021/04/msg00021.html

ADVISORYhttps://security.gentoo.org/glsa/202209-05

ADVISORYhttps://security.netapp.com/advisory/ntap-20210513-0001/

ADVISORYhttps://www.debian.org/security/2021/dsa-4899

All References (26)

→

https://docs.azul.com/core/zulu-openjdk/release-notes/april-2021.html#fixed-common-vulnerabilities-and-exposuresThird Party Advisory

→

https://kc.mcafee.com/corporate/index?page=content&id=SB10366Third Party Advisory

→

https://lists.debian.org/debian-lts-announce/2021/04/msg00021.htmlMailing List · Third Party Advisory

→

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5ACX4JEVYH6H4PSMGMYWTGABPOFPH3TS/

→

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CFXOKM2233JVGYDOWW77BN54X3GZTIBK/

→

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CG7EWXSO6JUCVHP7R3SOZQ7WPNBOISJH/

→

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MAULPCQFLAMBJIS27YLNNX6IHRFJMVP4/

→

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MVDY4T5XMSYDQT6RRKPMRCV4MVGS7KXF/

→

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UD3JEP4HPLK7MNZHVUMKIJPBP74M3A2V/

→

https://security.gentoo.org/glsa/202209-05Third Party Advisory

→

https://security.netapp.com/advisory/ntap-20210513-0001/Third Party Advisory

→

https://www.debian.org/security/2021/dsa-4899Third Party Advisory

→

https://www.oracle.com/security-alerts/cpuapr2021.htmlPatch · Vendor Advisory

→

https://docs.azul.com/core/zulu-openjdk/release-notes/april-2021.html#fixed-common-vulnerabilities-and-exposuresThird Party Advisory

→

https://kc.mcafee.com/corporate/index?page=content&id=SB10366Third Party Advisory

Quick Facts

CVE IDCVE-2021-2161

CVSS Score5.9 / 10

SeverityMEDIUM

WeaknessNVD-CWE-noinfo

CISA KEVNo

Affected5 vendor(s)

PublishedApr 22, 2021

Related CVEs (NVD-CWE-noinfo)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2021-2161 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.

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