CVE-2018-2603

Vulnerability in the Java SE, Java SE Embedded, JRockit component of Oracle Java SE (subcomponent: Libraries). Supported versions that are affected are Java SE: 6u171, 7u161, 8u152 and 9.0.1; Java SE Embedded: 8u151; JRockit: R28.3.16. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE, Java SE Embedded, JRockit. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Java SE, Java SE Embedded, JRockit. Note: This vulnerability applies to client and server deployment of Java. This vulnerability can be exploited through sandboxed Java Web Start applications and sandboxed Java applets. It can also be exploited by supplying data to APIs in the specified Component without using sandboxed Java Web Start applications or sandboxed Java applets, such as through a web service. CVSS 3.0 Base Score 5.3 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).

Published: 2018-01-17 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-2603 is rated Moderate Risk (58.8/100): CVSS Medium severity, with high exploitation likelihood (EPSS 6.95%, 93th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +6.82% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize 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-2018-2603

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 2026-06-15 0.13% 6.95% +6.82%
2 2026-05-13 0.16% 0.13% -0.03%
3 2026-04-29 — 0.16% —

Full EPSS history (13 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-2603

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L 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:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
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:N)
Data isn’t meaningfully altered or forged.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 3.9 1.4 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2018-2603

OS Trackers for CVE-2018-2603

vendor priority summary link
debian not yet assigned CVE-2018-2603 not yet assigned priority: Debian including 1 source packages (openjdk-8), 1 status rows across 1 suites (sid): resolved 1. https://security-tracker.debian.org/tracker/CVE-2018-2603
gentoo normal CVE-2018-2603: 1 GLSA(s) (201803-06), 2 atom(s) (dev-java/oracle-jdk-bin, dev-java/oracle-jre-bin); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2018-2603
redhat medium — https://access.redhat.com/security/cve/CVE-2018-2603
suse medium — https://www.suse.com/security/cve/CVE-2018-2603/
ubuntu low CVE-2018-2603 low priority: Ubuntu including 4 source packages (openjdk-6, openjdk-7, openjdk-8, openjdk-9), 60 status rows across 15 suites (artful, bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, trusty, upstream, xenial): DNE 40, not-affected 11, released 6, ignored 2, needs-triage 1. https://ubuntu.com/security/CVE-2018-2603

Affected software / configurations for CVE-2018-2603

Vendor Product Version Raw CPE
oracle jdk 1.6.0 cpe:2.3:a:oracle:jdk:1.6.0:update171:*:*:*:*:*:*
oracle jdk 1.7.0 cpe:2.3:a:oracle:jdk:1.7.0:update161:*:*:*:*:*:*
oracle jdk 1.8.0 cpe:2.3:a:oracle:jdk:1.8.0:update152:*:*:*:*:*:*
oracle jdk 9.0.1 cpe:2.3:a:oracle:jdk:9.0.1:*:*:*:*:*:*:*
oracle jre 1.6.0 cpe:2.3:a:oracle:jre:1.6.0:update171:*:*:*:*:*:*
oracle jre 1.7.0 cpe:2.3:a:oracle:jre:1.7.0:update161:*:*:*:*:*:*
oracle jre 1.8.0 cpe:2.3:a:oracle:jre:1.8.0:update152:*:*:*:*:*:*
oracle jre 9.0.1 cpe:2.3:a:oracle:jre:9.0.1:*:*:*:*:*:*:*
oracle jrockit r28.3.16 cpe:2.3:a:oracle:jrockit:r28.3.16:*:*:*:*:*:*:*
redhat satellite 5.6 cpe:2.3:a:redhat:satellite:5.6:*:*:*:*:*:*:*
redhat satellite 5.7 cpe:2.3:a:redhat:satellite:5.7:*:*:*:*:*:*:*
redhat satellite 5.8 cpe:2.3:a:redhat:satellite:5.8:*:*:*:*:*:*:*
redhat enterprise_linux_desktop 6.0 cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
redhat enterprise_linux_desktop 7.0 cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
redhat enterprise_linux_server 6.0 cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
redhat enterprise_linux_server 7.0 cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
redhat enterprise_linux_server_aus 7.4 cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*
redhat enterprise_linux_server_aus 7.6 cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*
redhat enterprise_linux_server_eus 7.4 cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:*
redhat enterprise_linux_server_eus 7.5 cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*
redhat enterprise_linux_server_eus 7.6 cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*
redhat enterprise_linux_server_tus 7.4 cpe:2.3:o:redhat:enterprise_linux_server_tus:7.4:*:*:*:*:*:*:*
redhat enterprise_linux_server_tus 7.6 cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*
redhat enterprise_linux_workstation 6.0 cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*
redhat enterprise_linux_workstation 7.0 cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
debian debian_linux 7.0 cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
debian debian_linux 9.0 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
canonical ubuntu_linux 14.04 cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 16.04 cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 17.10 cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
schneider-electric struxureware_data_center_expert < 7.6.0 cpe:2.3:a:schneider-electric:struxureware_data_center_expert:*:*:*:*:*:*:*:*
hp xp_command_view >= 8.6.2-01 cpe:2.3:a:hp:xp_command_view:*:*:*:*:advanced:*:*:*
hp xp_p9000_command_view >= 8.6.2-01 cpe:2.3:a:hp:xp_p9000_command_view:*:*:*:*:advanced:*:*:*
hp xp7_command_view >= 8.6.2-01 cpe:2.3:a:hp:xp7_command_view:*:*:*:*:advanced:*:*:*

References for CVE-2018-2603

URL Tags
http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html Patch Vendor Advisory
http://www.securityfocus.com/bid/102625 Broken Link Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1040203 Broken Link Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2018:0095 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:0099 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:0100 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:0115 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:0349 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:0351 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:0352 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:0458 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:0521 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1463 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1812 Third Party Advisory
https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0 Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/04/msg00003.html Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20180117-0001/ Third Party Advisory
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbst03911en_us Third Party Advisory
https://usn.ubuntu.com/3613-1/ Third Party Advisory
https://usn.ubuntu.com/3614-1/ Third Party Advisory
https://www.debian.org/security/2018/dsa-4144 Third Party Advisory
https://www.debian.org/security/2018/dsa-4166 Third Party Advisory
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