CVE-2018-2634

Vulnerability in the Java SE, Java SE Embedded component of Oracle Java SE (subcomponent: JGSS). Supported versions that are affected are Java SE: 7u161, 8u152 and 9.0.1; Java SE Embedded: 8u151. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE, Java SE Embedded. While the vulnerability is in Java SE, Java SE Embedded, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Java SE, Java SE Embedded accessible data. Note: This vulnerability applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. This vulnerability does not apply to Java deployments, typically in servers, that load and run only trusted code (e.g., code installed by an administrator). CVSS 3.0 Base Score 6.8 (Confidentiality impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N).

Published: 2018-01-18 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-2634 is rated Moderate Risk (63.2/100): CVSS Medium severity, with high exploitation likelihood (EPSS 4.56%, 90th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +4.37% 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-2018-2634

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 0.19% 4.56% +4.37%
2 2026-04-29 0.13% 0.19% +0.06%
3 2026-03-10 — 0.13% —

Full EPSS history (23 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-2634

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.8 3.1 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/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:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.2 4.0 [email protected]
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:N/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:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2018-2634

OS Trackers for CVE-2018-2634

vendor priority summary link
debian not yet assigned CVE-2018-2634 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-2018-2634
gentoo normal CVE-2018-2634: 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-2018-2634
redhat high — https://access.redhat.com/security/cve/CVE-2018-2634
suse medium — https://www.suse.com/security/cve/CVE-2018-2634/
ubuntu medium CVE-2018-2634 medium 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-2018-2634

Affected software / configurations for CVE-2018-2634

Vendor Product Version Raw CPE
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 1.7.0 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:*:*:*:*:*:*:*
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-2018-2634

URL Tags
http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html Patch Vendor Advisory
http://www.securityfocus.com/bid/102592 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-2018:0349 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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