CVE-2020-2604: Vulnerability in the Java SE, Java SE Embedded product of Oracle Java SE (component: Serialization)

Recommended actionWithin 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available

What, why and how

Vulnerability in the Java SE, Java SE Embedded product of Oracle Java SE (component: Serialization). Supported versions that are affected are Java SE: 7u241, 8u231, 11.0.5 and 13.0.1; Java SE Embedded: 8u231. 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 takeover of Java SE, Java SE Embedded. Note: This vulnerability applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets (in Java SE 8), that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. This vulnerability can also be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. CVSS v3.0 Base Score 8.1 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).

What

Why

Attacker-influenced serialised data is reconstructed as trusted objects, which can invoke dangerous application behaviour.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

Why

Attacker-influenced serialised data is reconstructed as trusted objects, which can invoke dangerous application behaviour.

How

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation

Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.

No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material

Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.

None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path: a network path → Deserialization of Untrusted Data → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface: Network
Privileges required: None: unauthenticated exploitation is possible
User interaction: None
Attack complexity: High: exploitation depends on specific conditions
Security boundary: Unchanged: impact remains within the vulnerable component's security authority
Weakness ? CWE means Common Weakness Enumeration: a standard category for the underlying weakness.: CWE-502 ↗
CWE-502: Deserialization of Untrusted Data. The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
CVSS vector ? CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.
AVNetworkAttack vector: The vulnerable component can be reached over a network.ACHighAttack complexity: Successful exploitation depends on specific conditions outside the attacker's direct control.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land: No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.

NetworkUnauthenticatedCWE-502

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2020-22397Official EUVD mapping

0 linked advisory records.

Official EUVD record

BSI · German · WID-SEC-W-2023-0234Oracle Java SE: Mehrere Schwachstellen

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Oracle Java SE ausnutzen, um die Verfügbarkeit, Vertraulichkeit und Integrität zu gefährden.

Official advisory

CERT-FR · French · CERTFR-2024-AVI-0514Multiples vulnérabilités dans les produits IBM

ité IBM 7157753 du 17 juin 2024 https://www.ibm.com/support/pages/node/7157753 Bulletin de sécurité IBM 7157924 du 18 juin 2024 https://www.ibm.com/support/pages/node/7157924 Bulletin de sécurité IBM 7157927 du 18 juin 2024 https://www.ibm.com/support/pages/node/7157927 Bulletin de sécurité IBM 7157929 du 18 juin 2024 https://www.ibm.com/support/pages/node/7157929 Bulletin de sécurité IBM 7158042 du 19 juin 2024 https://www.ibm.com/support/pages/node/7158042 Bulletin de sécurité IBM 7157847 du 20 juin 2024 https://www.ibm.com/support/pages/node/7157847 Référence CVE CVE-2019-11250 https://www.cve.org/CVERecord?id=CVE-2019-11250 Référence CVE CVE-2020-2604 https://www.cve.org/CVERecord?id=CVE-2020-2604 Référence CVE CVE-2020-2659 https://www.cve.org/CVERecord?id=CVE-2020-2659 Référence CVE CVE-2020-2756 https://www.cve.org/CVERecord?id=CVE-2020-2756 Référence CVE CVE-2020-2757 https://www.cve.org/CVERecord?id=CVE-2020-2757 Référence CVE CVE-2020-2773 https://www.cve.org/CVERecord?id=CVE-2020-2773 Référence CVE CVE-2020-2781 https://www.cve.org/CVERecord?id=CVE-2020-2781 Référence CVE CVE-2020-2800 https://www.cve.org/CVERecord?id=CVE-2020-2800 Référence CVE CVE-2020-2803 https://www.cve.org/CVERecord?id=CVE-2020-2803 Référence CVE CVE-2020-2805 https://www.cve.org/CVERecord?id=CVE-2020-2805 Ré

Official advisory

CERT-FR · French · CERTFR-2021-AVI-254Multiples vulnérabilités dans les produits IBM

ve.org/CVERecord?id=CVE-2019-2988 Référence CVE CVE-2019-2989 https://www.cve.org/CVERecord?id=CVE-2019-2989 Référence CVE CVE-2019-2992 https://www.cve.org/CVERecord?id=CVE-2019-2992 Référence CVE CVE-2019-2999 https://www.cve.org/CVERecord?id=CVE-2019-2999 Référence CVE CVE-2020-14803 https://www.cve.org/CVERecord?id=CVE-2020-14803 Référence CVE CVE-2020-2583 https://www.cve.org/CVERecord?id=CVE-2020-2583 Référence CVE CVE-2020-2590 https://www.cve.org/CVERecord?id=CVE-2020-2590 Référence CVE CVE-2020-2593 https://www.cve.org/CVERecord?id=CVE-2020-2593 Référence CVE CVE-2020-2601 https://www.cve.org/CVERecord?id=CVE-2020-2601 Référence CVE CVE-2020-2604 https://www.cve.org/CVERecord?id=CVE-2020-2604 Référence CVE CVE-2020-2654 https://www.cve.org/CVERecord?id=CVE-2020-2654 Référence CVE CVE-2020-2655 https://www.cve.org/CVERecord?id=CVE-2020-2655 Référence CVE CVE-2020-27221 https://www.cve.org/CVERecord?id=CVE-2020-27221 Référence CVE CVE-2020-2754 https://www.cve.org/CVERecord?id=CVE-2020-2754 Référence CVE CVE-2020-2755 https://www.cve.org/CVERecord?id=CVE-2020-2755 Référence CVE CVE-2020-2756 https://www.cve.org/CVERecord?id=CVE-2020-2756 Référence CVE CVE-2020-2757 https://www.cve.org/CVERecord?id=CVE-2020-2757 Référence CVE CVE-2020-2767 https://www.cve.org/CVERecord?id=CVE-2020-2767

Official advisory

CERT-FR · French · CERTFR-2020-AVI-176Multiples vulnérabilités dans IBM Java Runtime et Java SDK

De multiples vulnérabilités ont été découvertes dans IBM Java Runtime et Java SDK. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire, un déni de service et une atteinte à l'intégrité des données.

Official advisory

CERT-FR · French · CERTFR-2020-AVI-169Multiples vulnérabilités dans IBM SDK, Java Technology Edition

.cve.org/CVERecord?id=CVE-2019-2989 Référence CVE CVE-2019-2992 https://www.cve.org/CVERecord?id=CVE-2019-2992 Référence CVE CVE-2019-2996 https://www.cve.org/CVERecord?id=CVE-2019-2996 Référence CVE CVE-2019-2999 https://www.cve.org/CVERecord?id=CVE-2019-2999 Référence CVE CVE-2019-4473 https://www.cve.org/CVERecord?id=CVE-2019-4473 Référence CVE CVE-2019-4732 https://www.cve.org/CVERecord?id=CVE-2019-4732 Référence CVE CVE-2019-7317 https://www.cve.org/CVERecord?id=CVE-2019-7317 Référence CVE CVE-2020-2583 https://www.cve.org/CVERecord?id=CVE-2020-2583 Référence CVE CVE-2020-2593 https://www.cve.org/CVERecord?id=CVE-2020-2593 Référence CVE CVE-2020-2604 https://www.cve.org/CVERecord?id=CVE-2020-2604 Référence CVE CVE-2020-2659 https://www.cve.org/CVERecord?id=CVE-2020-2659 Gestion détaillée du document le 23 mars 2020 Version initiale Alertes Avis Bulletins d’actualités Mentions légales Conditions générales À propos Contact cyber.gouv.fr service-public.fr legifrance.gouv.fr info.gouv.fr france.fr info.gouv.fr/risques Premier Ministre / Secrétariat Général de la Défense et de la Sécurité Nationale / Agence nationale de la sécurité des systèmes d'information

Official advisory

CERT-FR · French · CERTFR-2020-AVI-158Multiples vulnérabilités dans IBM WebSphere Application Server

De multiples vulnérabilités ont été découvertes dans l'environnement Java utilisé dans IBM WebSphere Application Server versions 'Traditional', 'Liberty' et 'Server Hypervisor'. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire, un déni de service et une atteinte à l'intégrité des données.

Official advisory

CERT-FR · French · CERTFR-2020-AVI-035Multiples vulnérabilités dans Oracle Java SE

De multiples vulnérabilités ont été découvertes dans Oracle Java SE. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, un déni de service à distance et une atteinte à l'intégrité des données.

Official advisory

Patch and workaround

Operational remediation based on structured source evidence.

Status ? Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.: Patch available
Affected: Java SE: 7u241, 8u231, 11.0.5, 13.0.1; Java SE Embedded: 8u231
Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
Action: Review the linked authoritative reference and apply the recorded fixed release appropriate to the affected product branch.
Workaround: No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.

Evidence and provenance

Published 15 Jan 2020 · Last source change 30 Sept 2024, 14:51 UTC · CWE-502 · Deserialization of Untrusted Data

CVE recordCVE.org · 5.1

CVSS sourceNIST NVD

EPSS source

The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.

FIRST · tracked since 2026-08-14

European sourceENISA EUVD · EUVD-2020-22397

Product sourceCNA

Remediation sourceCVE/CNA references

CWE sourceNIST NVD

NVD statusNVD modified after enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates →

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

2020-01-15CVE published

2024-09-30Fixed release or patch reference recorded

ENISA EUVD · EUVD-2020-22397↗Patch or update reference↗Patch or update reference↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗

Technical terms and abbreviations used in this report

CVE: Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS: Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS: Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE: Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA: CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP: Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD: National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT: A computer security incident response team that publishes warnings or coordinates incident response.
PoC: Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF: Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL: Living off the land: abuse of legitimate tools or system functions during an attack.

Vulnerability in the Java SE, Java SE Embedded product of Oracle Java SE (component: Serialization)

National CERT insights
?
CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

ENISA European Vulnerability Database

EUVD-2020-22397

What, why and how

Exploit reality and attack path

Official authority intelligence

Patch and workaround

Evidence and provenance

What changed after publication

Vulnerability in the Java SE, Java SE Embedded product of Oracle Java SE (component: Serialization)

National CERT insights ?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

EUVD-2020-22397

What, why and how

Exploit reality and attack path

Official authority intelligence

Patch and workaround

Evidence and provenance

National CERT insights
?
CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.