CVE-2018-0824: Microsoft COM for Windows Deserialization of Untrusted Data Vulnerability

Recommended actionPatch now

CISA confirms exploitation in the wild and lists 2024-08-26 as the remediation due date.

Patch available

What, why and how

Microsoft COM for Windows contains a deserialization of untrusted data vulnerability that allows for privilege escalation and remote code execution via a specially crafted file or script.

What

Microsoft COM for Windows contains a deserialization of untrusted data vulnerability that allows for privilege escalation and remote code execution via a specially crafted file or script.

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 after a user interaction. If successful, the issue may execute code or commands in the affected security context.

What

Microsoft COM for Windows contains a deserialization of untrusted data vulnerability that allows for privilege escalation and remote code execution via a specially crafted file or script.

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.

Confirmed in the wild

CISA added this CVE to its Known Exploited Vulnerabilities catalogue on 2024-08-05.

Public PoC / exploit material

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

Reference recorded

A structured CVE source labels at least one public reference as exploit material. BlackTree has not independently validated that it is safe, reliable or weaponised.

Likely attack path: a network path → Deserialization of Untrusted Data → execute code or commands in the affected security context
Attack surface: Network
Privileges required: None: unauthenticated exploitation is possible
User interaction: Required interaction required
Attack complexity: Low: no specialised conditions are recorded
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:L/PR:N/UI:R/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.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UIRequiredUser interaction: Another user must perform an action for exploitation to succeed.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: After compromise, an attacker may use built-in shells, scripting engines, scheduled tasks and native network utilities for discovery, persistence or movement. This is a plausible LoTL path, not evidence that it has occurred for every attack.

NetworkUnauthenticatedRemote code executionPrivilege escalationCWE-502CISA KEVPublic exploit reference

Official authority intelligence

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

ENISA EUVD · EUVD-2018-1629Known-exploited evidence recorded

A remote code execution vulnerability exists in "Microsoft COM for Windows" when it fails to properly handle serialized objects, aka "Microsoft COM for Windows Remote Code Execution Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers.

Official EUVD record ↗

Canadian Centre for Cyber Security · English · AV18-075Microsoft security updates

Number: AV18-075 Date: 8 May 2018 Purpose The purpose of this advisory is to bring attention to recently released Microsoft Security Updates. Assessment This advisory covers multiple support package deployments addressing multiple vulnerabilities in various Microsoft products. Products Affected: -Internet Explorer -Microsoft Edge -Microsoft Windows -Microsoft Office and Microsoft Office Services and Web Apps -ChakraCore -Adobe Flash Player -.NET Framework -Microsoft Exchange Server -Windows Host Compute Service Shim CVE References: ADV180008, CVE-2018-0765, CVE-2018-0824, CVE-2018-0854, CVE-2018-0943, CVE-2018-0945, CVE-2018-0946, CVE-2018-0951, CVE-2018-0953, CVE-2018-0954, CVE-2018-0955, CVE-2018-0958, CVE-2018-0959, CVE-2018-0961, CVE-2018-1021, CVE-2018-1022, CVE-2018-1025, CVE-2018-1039, CVE-2018-8112, CVE-2018-8114, CVE-2018-8119, CVE-2018-8120, CVE-2018-8122, CVE-2018-8123, CVE-2018-8124, CVE-2018-8126, CVE-2018-8127, CVE-2018-8128, CVE-2018-8129, CVE-2018-8130, CVE-2018-8132, CVE-2018-8133, CVE-2018-8134, CVE-2018-8136, CVE-2018-8137, CVE-2018-8139, CVE-2018-8141, CVE-2018-8142, CVE-2018-8145, CVE-2018-8147, CVE-2018-8148, CVE-2018-8149, CVE-2018-8150, CVE-2018-8151, CVE-2018-8152, CVE-2018-8153, CVE

Official advisory ↗

CERT-FR · French · CERTFR-2018-AVI-221Multiples vulnérabilités dans Microsoft Windows

re installation) Windows Server, version 1709 (Server Core Installation) Windows Server, version 1803 (Server Core Installation) Résumé De multiples vulnérabilités ont été corrigées dans Microsoft Windows . Elles permettent à un attaquant de provoquer une divulgation d'informations, une élévation de privilèges, un contournement de la fonctionnalité de sécurité et une exécution de code à distance. Solution Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation). Documentation Bulletin de sécurité Microsoft du 08 mai 2018 https://portal.msrc.microsoft.com/fr-FR/security-guidance Référence CVE CVE-2018-0824 https://www.cve.org/CVERecord?id=CVE-2018-0824 Référence CVE CVE-2018-0854 https://www.cve.org/CVERecord?id=CVE-2018-0854 Référence CVE CVE-2018-0958 https://www.cve.org/CVERecord?id=CVE-2018-0958 Référence CVE CVE-2018-0959 https://www.cve.org/CVERecord?id=CVE-2018-0959 Référence CVE CVE-2018-0961 https://www.cve.org/CVERecord?id=CVE-2018-0961 Référence CVE CVE-2018-1035 https://www.cve.org/CVERecord?id=CVE-2018-1035 Référence CVE CVE-2018-8115 https://www.cve.org/CVERecord?id=CVE-2018-8115 Référence CVE CVE-2018-8120 https://www.cve.org/CVERecord?id=CVE-2018-8120 Référence CVE CVE-2018-8124 https://www.cve.org/CVERecord?id=CVE-2018-8124 Ré

Official advisory ↗

NBSZ-NKI · Hungarian · cve-2018-0824CVE-2018-0824

Magas

Official advisory ↗

JVN iPedia · Japanese · JVNDB-2018-004256複数の Microsoft Windows 製品におけるリモートでコードを実行される脆弱性

複数の Microsoft Windows 製品には、シリアル化されたオブジェクトの適切な処理に失敗した場合、リモートでコードを実行される脆弱性が存在します。ベンダは、本脆弱性を「Microsoft COM for Windows のリモートでコードが実行される脆弱性」として公開しています。

Official advisory ↗

KISA KrCERT/CC · Korean · KNVD-6253美 CISA 발표 주요 Exploit 정보공유(Update. 2024-08-05)

Microsoft COM for Windows contains a deserialization of untrusted data vulnerability that allows for privilege escalation and remote code execution via a specially crafted file or script.

Official advisory ↗

KISA KrCERT/CC · Korean · KNVD-4871MS 5월 보안 위협에 따른 정기 보안 업데이트 권고

- 원격코드실행 취약점(CVE-2018-0824,CVE-2018-0943,CVE-2018-0945,CVE-2018-0946,CVE-2018-0951,CVE-2018-0953,CVE-2018-0954,CVE-2018-0959,CVE-2018-0961,CVE-2018-1022,CVE-2018-8128,CVE-2018-8130,CVE-2018-8133,CVE-2018-8136,CVE-2018-8137,CVE-2018-8139,CVE-2018-8174,CVE-2018-8178,CVE-2018-8179)

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: n/a: n/a
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 9 May 2018 · Last source change 21 Oct 2025, 23:45 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 2026-09-01

European sourceENISA EUVD · EUVD-2018-1629

Product sourceCNA

Remediation sourceCVE/CNA references

CWE sourceCISA ADP

NVD statusNVD enriched

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

Material change intelligence

What changed after publication

View recent updates ↗

21 Oct 2025, 23:45 UTC
Affected versionsThe structured affected or fixed version information changed.
Before
n/a · 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.
After
n/a: n/a · 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.
CNA ↗
21 Oct 2025, 23:45 UTC
Vendor guidanceAuthoritative vendor guidance changed from no authoritative guidance recorded to authoritative remediation link · patch.
Before
no authoritative guidance recorded
After
authoritative remediation link · patch
af854a3a-2127-422b-91ae-364da2661108 ↗
21 Oct 2025, 23:45 UTC
Affected versionsThe structured affected or fixed version information changed.
Before
n/a · Fixed: No fixed version is explicitly recorded in the structured CVE data.
After
n/a · 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.
CNA ↗
21 Oct 2025, 23:45 UTC
Remediation statusRemediation status changed from Awaiting fix to Patch available.
Before
Awaiting fix
After
Patch available
af854a3a-2127-422b-91ae-364da2661108 ↗
21 Oct 2025, 23:45 UTC
CVSS scoreCVSS score changed from 7.5 (CVSS 3.1 · CISA ADP · CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H) to 8.8 (CVSS 3.1 · NIST NVD · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).
Before
7.5 (CVSS 3.1 · CISA ADP · CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H)
After
8.8 (CVSS 3.1 · NIST NVD · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
NIST NVD ↗
1 Sept 2026, 02:45 UTC
ENISA known-exploited stateENISA EUVD now records this CVE in its known-exploited dataset.
Before
not recorded
After
{"euvdId":"EUVD-2018-1629","listed":true,"sources":["cisa_kev"]}
ENISA EUVD ↗
1 Sept 2026, 02:42 UTC
ENISA EUVD mappingEUVD-2018-1629 was added to the official ENISA EUVD mapping for this CVE.
Before
not recorded
After
{"euvdId":"EUVD-2018-1629"}
ENISA EUVD ↗
21 Oct 2025, 23:45 UTC
Catalogue recordCVE added to the BlackTree catalogue.
CNA ↗

2018-05-09CVE published

2024-08-05Added to CISA KEV

2025-10-21Fixed release or patch reference recorded

ENISA EUVD · EUVD-2018-1629↗CISA KEV record↗Patch or update reference↗CVE authority or vendor reference↗Public exploit 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.

Microsoft COM for Windows Deserialization of Untrusted Data Vulnerability

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-2018-1629

What, why and how

Exploit reality and attack path

Official authority intelligence

Patch and workaround

Evidence and provenance

What changed after publication

Microsoft COM for Windows Deserialization of Untrusted Data Vulnerability

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

EUVD-2018-1629

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.