HOME VULNERABILITIESCVE-2020-2756

LOW

CVE-2020-2756

CWE-502Published: April 15, 2020· Updated: Jun 17, 2026

3.7

CVSS v3.1

Official Description

Vulnerability in the Java SE, Java SE Embedded product of Oracle Java SE (component: Serialization). Supported versions that are affected are Java SE: 7u251, 8u241, 11.0.6 and 14; Java SE Embedded: 8u241. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE, Java SE Embedded. 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. Note: 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 3.7 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L).

Technical Analysis

CVE-2020-2756 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

From a weakness classification perspective (CWE-502): Insecure deserialization vulnerabilities allow attackers to inject malicious objects during deserialization, potentially enabling remote code execution.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityLow

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected Vendors & Products

Canonical1 product(s)

ubuntu linux

Debian1 product(s)

debian linux

Fedora1 product(s)

fedora

mcafee1 product(s)

epolicy orchestrator

netapp12 product(s)

7-mode transition toolactive iq unified managercloud backupcloud secure agente-series performance analyzere-series santricity os controllere-series santricity web servicesoncommand insightsantricity unified managersnapmanagersteelstore cloud integrated storagestoragegrid

openSUSE1 product(s)

leap

Oracle3 product(s)

jdkjreopenjdk

Source: NVD CPE · 38 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2020-06/msg00000.html

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2020-06/msg00023.html

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2020-06/msg00048.html

ADVISORYhttps://kc.mcafee.com/corporate/index?page=content&id=SB10332

ADVISORYhttps://lists.debian.org/debian-lts-announce/2020/04/msg00024.html

ADVISORYhttps://security.gentoo.org/glsa/202006-22

ADVISORYhttps://security.gentoo.org/glsa/202209-15

ADVISORYhttps://security.netapp.com/advisory/ntap-20200416-0004/

ADVISORYhttps://usn.ubuntu.com/4337-1/

ADVISORYhttps://www.debian.org/security/2020/dsa-4662

ADVISORYhttps://www.debian.org/security/2020/dsa-4668

ADVISORYhttps://www.oracle.com/security-alerts/cpuapr2020.html

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2020-06/msg00000.html

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2020-06/msg00023.html

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2020-06/msg00048.html

ADVISORYhttps://kc.mcafee.com/corporate/index?page=content&id=SB10332

ADVISORYhttps://lists.debian.org/debian-lts-announce/2020/04/msg00024.html

ADVISORYhttps://security.gentoo.org/glsa/202006-22

ADVISORYhttps://security.gentoo.org/glsa/202209-15

ADVISORYhttps://security.netapp.com/advisory/ntap-20200416-0004/

ADVISORYhttps://usn.ubuntu.com/4337-1/

ADVISORYhttps://www.debian.org/security/2020/dsa-4662

ADVISORYhttps://www.debian.org/security/2020/dsa-4668

ADVISORYhttps://www.oracle.com/security-alerts/cpuapr2020.html

All References (30)

→

http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00000.htmlMailing List · Third Party Advisory

→

http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00023.htmlMailing List · Third Party Advisory

→

http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00048.htmlMailing List · Third Party Advisory

→

https://kc.mcafee.com/corporate/index?page=content&id=SB10332Third Party Advisory

→

https://lists.debian.org/debian-lts-announce/2020/04/msg00024.htmlMailing List · Third Party Advisory

→

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CKAV6KFFAEANXAN73AFTGU7Z6YNRWCXQ/

→

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L7VHC4EW36KZEIDQ56RPCWBZCQELFFKN/

→

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NYHHHZRHXCBGRHGE5UP7UEB4IZ2QX536/

→

https://security.gentoo.org/glsa/202006-22Third Party Advisory

→

https://security.gentoo.org/glsa/202209-15Third Party Advisory

→

https://security.netapp.com/advisory/ntap-20200416-0004/Third Party Advisory

→

https://usn.ubuntu.com/4337-1/Third Party Advisory

→

https://www.debian.org/security/2020/dsa-4662Third Party Advisory

→

https://www.debian.org/security/2020/dsa-4668Third Party Advisory

→

https://www.oracle.com/security-alerts/cpuapr2020.htmlVendor Advisory

Quick Facts

CVE IDCVE-2020-2756

CVSS Score3.7 / 10

SeverityLOW

WeaknessCWE-502

CISA KEVNo

Affected7 vendor(s)

PublishedApr 15, 2020

Related CVEs (CWE-502)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2020-2756 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.

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