CVE-2018-2657

Vulnerability in the Java SE, JRockit component of Oracle Java SE (subcomponent: Serialization). Supported versions that are affected are Java SE: 6u171 and 7u161; JRockit: R28.3.16. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE, JRockit. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Java SE, JRockit. Note: This vulnerability can only be exploited by supplying data to APIs in the specified Component without using Untrusted Java Web Start applications or Untrusted 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-2018-2657 is rated Moderate Risk (59/100): CVSS Medium severity, with high exploitation likelihood (EPSS 7.67%, 94th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +7.22% 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-2018-2657

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 0.45% 7.67% +7.22%
2 2026-04-29 1.00% 0.45% -0.56%
3 2026-04-13 — 1.00% —

Full EPSS history (26 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-2657

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.0 MEDIUM
CVSS:3.0/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-2018-2657

OS Trackers for CVE-2018-2657

vendor priority summary link
debian unimportant CVE-2018-2657 unimportant priority: Debian including 1 source packages (openjdk-8), 1 status rows across 1 suites (sid): resolved 1. https://security-tracker.debian.org/tracker/CVE-2018-2657
redhat medium — https://access.redhat.com/security/cve/CVE-2018-2657
suse medium CVE-2018-2657 severity moderate: SUSE including 39 source package names (java-10-openjdk, java-10-openjdk-demo, …), 163 product×package rows across 47 product lines (Image SLES12-SP5-Azure-SAP-BYOS, Image SLES12-SP5-Azure-SAP-On-Demand, … (47 product lines)): Fixed 89, Known Not Affected 74. https://www.suse.com/security/cve/CVE-2018-2657/
ubuntu medium CVE-2018-2657 medium priority: Ubuntu including 4 source packages (openjdk-6, openjdk-7, openjdk-8, openjdk-9), 16 status rows across 4 suites (artful, trusty, upstream, xenial): DNE 8, not-affected 8. https://ubuntu.com/security/CVE-2018-2657

Affected software / configurations for CVE-2018-2657

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 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 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_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_eus 7.5 cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*
redhat enterprise_linux_workstation 6.0 cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*
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-2018-2657

URL Tags
http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html Patch
http://www.securityfocus.com/bid/102629 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1040203 Third Party Advisory VDB Entry
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-2018:0458 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://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
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