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CVE-2018-2657

22
FAUCET Score

CVE-2018-2657 is a vulnerability in the Serialization subcomponent of Oracle Java SE and JRockit, affecting versions 6u171, 7u161, and R28.3.16 respectively, as well as products from HP, Red Hat, and Schneider Electric. This easily exploitable flaw allows an unauthenticated attacker with network access to cause a partial denial of service. With a CVSS 3.0 Base Score of 5.3 (Medium), the attack requires supplying data to specific APIs without relying on untrusted Java Web Start applications or applets. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
1.6.0CPE matchmatch criteria
cpe:2.3:a:oracle:jdk:1.6.0:update171:*:*:*:*:*:*
1.7.0CPE matchmatch criteria
cpe:2.3:a:oracle:jdk:1.7.0:update161:*:*:*:*:*:*
1.6.0CPE matchmatch criteria
cpe:2.3:a:oracle:jre:1.6.0:update171:*:*:*:*:*:*
1.7.0CPE matchmatch criteria
cpe:2.3:a:oracle:jre:1.7.0:update161:*:*:*:*:*:*
r28.3.16CPE matchmatch criteria
cpe:2.3:a:oracle:jrockit:r28.3.16:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.3MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
7.52%
Probability of exploitation in next 30 days
EPSS Percentile
93.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0752 is in the 92nd percentile among its peer group of 23,701 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (11)

oraclepatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Oracle Java for Red Hat Enterprise Linux 6Fixed in: java-1.7.0-oracle-1:1.7.0.171-1jpp.1.el6_9
View patch
redhatpatch availablevia redhat_api
Product: Oracle Java for Red Hat Enterprise Linux 6Fixed in: java-1.6.0-sun-1:1.6.0.181-1jpp.1.el6
View patch
redhatpatch availablevia redhat_api
Product: Oracle Java for Red Hat Enterprise Linux 7Fixed in: java-1.7.0-oracle-1:1.7.0.171-1jpp.1.el7
View patch
redhatpatch availablevia redhat_api
Product: Oracle Java for Red Hat Enterprise Linux 7Fixed in: java-1.6.0-sun-1:1.6.0.181-1jpp.2.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6 SupplementaryFixed in: java-1.7.1-ibm-1:1.7.1.4.20-1jpp.3.el6_9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7 SupplementaryFixed in: java-1.7.1-ibm-1:1.7.1.4.20-1jpp.1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Satellite 5.6Fixed in: java-1.7.1-ibm-1:1.7.1.4.20-1jpp.3.el6_9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Satellite 5.7Fixed in: java-1.7.1-ibm-1:1.7.1.4.20-1jpp.3.el6_9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Satellite 5.8Fixed in: java-1.8.0-ibm-1:1.8.0.5.10-1jpp.1.el6_9
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: java-1.6.0-ibm

Vendor Advisories (1)

redhatCVE-2018-2657Moderate

JDK: unspecified vulnerability fixed in 6u181 and 7u171 (Serialization)

Jan 16, 2018

References

access.redhat.com / errata/RHSA-2018:0100
Third Party Advisory
access.redhat.com / errata/RHSA-2018:0115
Third Party Advisory
access.redhat.com / errata/RHSA-2018:0458
Third Party Advisory
access.redhat.com / errata/RHSA-2018:0521
Third Party Advisory
access.redhat.com / errata/RHSA-2018:1463
Third Party Advisory
access.redhat.com / errata/RHSA-2018:1812
Third Party Advisory
help.ecostruxureit.com / display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0
Third Party Advisory
security.netapp.com / advisory/ntap-20180117-0001
Third Party Advisory
support.hpe.com / hpsc/doc/public/display
Third Party Advisory
oracle.com / technetwork/security-advisory/cpujan2018-3236628.html
Patch
securityfocus.com / bid/102629
Third Party AdvisoryVDB Entry
securitytracker.com / id/1040203
Third Party AdvisoryVDB Entry