CVE-2021-2161

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).

Published: 2021-04-22 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-2161 is rated Moderate Risk (50.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.13%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2021-2161

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-03 1.40% 1.13% -0.27%
2 2026-03-18 1.80% 1.40% -0.40%
3 2026-03-07 — 1.80% —

Full EPSS history (28 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-2161

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.9 3.1 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 2.2 3.6 [email protected]
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2021-2161

OS Trackers for CVE-2021-2161

vendor priority summary link
alpine medium CVE-2021-2161: 1 source package rows (openjdk7); 3 state rows across 3 repos (3.17-community, 3.18-community, edge-community); fixed 3, open 0. https://security.alpinelinux.org/vuln/CVE-2021-2161
debian unimportant CVE-2021-2161 unimportant priority: Debian including 3 source packages (openjdk-11, openjdk-17, openjdk-8), 6 status rows across 3 suites (bookworm, bullseye, sid): resolved 6. https://security-tracker.debian.org/tracker/CVE-2021-2161
gentoo low CVE-2021-2161: 1 GLSA(s) (202209-05), 3 atom(s) (dev-java/openjdk, dev-java/openjdk-bin, dev-java/openjdk-jre-bin); latest impact low. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2021-2161
redhat medium — https://access.redhat.com/security/cve/CVE-2021-2161
suse medium CVE-2021-2161 severity moderate: SUSE including 373 source package names (10.1.33-openjdk11-59.4:java-11-openjdk-11.0.11.0-3.56.1, 10.1.33-openjdk11-59.4:java-11-openjdk-headless-11.0.11.0-3.56.1, …), 816 product×package rows across 78 product lines (Container bci/openjdk, Container bci/openjdk-devel, … (78 product lines)): Fixed 439, Known Affected 231, Known Not Affected 118, Will Not Fix 28. https://www.suse.com/security/cve/CVE-2021-2161/
ubuntu medium CVE-2021-2161 medium priority: Ubuntu including 7 source packages (icedtea-web, openjdk-12, …), 112 status rows across 16 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 59, not-affected 32, needs-triage 13, ignored 8. https://ubuntu.com/security/CVE-2021-2161

Affected software / configurations for CVE-2021-2161

Vendor Product Version Raw CPE
oracle jdk 1.7.0 cpe:2.3:a:oracle:jdk:1.7.0:update291:*:*:*:*:*:*
oracle jdk 1.8.0 cpe:2.3:a:oracle:jdk:1.8.0:update281:*:*:*:*:*:*
oracle jdk 11.0.10 cpe:2.3:a:oracle:jdk:11.0.10:*:*:*:*:*:*:*
oracle jdk 16.0.0 cpe:2.3:a:oracle:jdk:16.0.0:*:*:*:*:*:*:*
oracle jre 1.8.0 cpe:2.3:a:oracle:jre:1.8.0:update281:*:*:*:*:*:*
debian debian_linux 9.0 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
debian debian_linux 10.0 cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
fedoraproject fedora 32 cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
fedoraproject fedora 33 cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
fedoraproject fedora 34 cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
oracle graalvm 19.3.5 cpe:2.3:a:oracle:graalvm:19.3.5:*:*:*:enterprise:*:*:*
oracle graalvm 20.3.1.2 cpe:2.3:a:oracle:graalvm:20.3.1.2:*:*:*:enterprise:*:*:*
oracle graalvm 21.0.0.2 cpe:2.3:a:oracle:graalvm:21.0.0.2:*:*:*:enterprise:*:*:*
oracle openjdk >= 11, <= 11.0.10 cpe:2.3:a:oracle:openjdk:*:*:*:*:*:*:*:*
oracle openjdk >= 13, <= 13.0.6 cpe:2.3:a:oracle:openjdk:*:*:*:*:*:*:*:*
oracle openjdk >= 15, <= 15.0.2 cpe:2.3:a:oracle:openjdk:*:*:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:-:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update1:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update10:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update101:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update11:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update111:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update121:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update13:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update131:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update141:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update15:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update151:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update161:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update17:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update171:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update181:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update191:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update2:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update201:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update21:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update211:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update221:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update231:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update241:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update25:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update251:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update261:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update271:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update281:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update291:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update3:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update4:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update40:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update45:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update5:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update51:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update55:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update6:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update60:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update65:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update67:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update7:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update72:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update76:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update80:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update85:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update9:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update91:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update95:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update97:*:*:*:*:*:*
oracle openjdk 7 cpe:2.3:a:oracle:openjdk:7:update99:*:*:*:*:*:*
oracle openjdk 8 cpe:2.3:a:oracle:openjdk:8:-:*:*:*:*:*:*
oracle openjdk 8 cpe:2.3:a:oracle:openjdk:8:milestone1:*:*:*:*:*:*
oracle openjdk 8 cpe:2.3:a:oracle:openjdk:8:milestone2:*:*:*:*:*:*
oracle openjdk 8 cpe:2.3:a:oracle:openjdk:8:milestone3:*:*:*:*:*:*
oracle openjdk 8 cpe:2.3:a:oracle:openjdk:8:milestone4:*:*:*:*:*:*
oracle openjdk 8 cpe:2.3:a:oracle:openjdk:8:milestone5:*:*:*:*:*:*
oracle openjdk 8 cpe:2.3:a:oracle:openjdk:8:milestone6:*:*:*:*:*:*
oracle openjdk 8 cpe:2.3:a:oracle:openjdk:8:milestone7:*:*:*:*:*:*
oracle openjdk 8 cpe:2.3:a:oracle:openjdk:8:milestone8:*:*:*:*:*:*
oracle openjdk 8 cpe:2.3:a:oracle:openjdk:8:milestone9:*:*:*:*:*:*
oracle openjdk 8 cpe:2.3:a:oracle:openjdk:8:update101:*:*:*:*:*:*
oracle openjdk 8 cpe:2.3:a:oracle:openjdk:8:update102:*:*:*:*:*:*
oracle openjdk 8 cpe:2.3:a:oracle:openjdk:8:update11:*:*:*:*:*:*

References for CVE-2021-2161

URL Tags
https://docs.azul.com/core/zulu-openjdk/release-notes/april-2021.html#fixed-common-vulnerabilities-and-exposures Third Party Advisory
https://kc.mcafee.com/corporate/index?page=content&id=SB10366 Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/04/msg00021.html Mailing 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/202209-05 Third Party Advisory
https://security.netapp.com/advisory/ntap-20210513-0001/ Third Party Advisory
https://www.debian.org/security/2021/dsa-4899 Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2021.html Patch Vendor Advisory
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