BlackTreeCVE Intelligence
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Full vulnerability report · 2020
CVE-2020-1432High confidence

An information disclosure vulnerability exists when Skype for Business is accessed via Internet Explorer, aka 'Skype for Business via Internet Explorer Information Disclosure Vulnerability'

Microsoft · Internet Explorer 11 on Windows 10 Version 2004 for x64-based Systems

4.3MediumCVSS 3.1
Recommended action
Scheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available
Optional official sources

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

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2020-12308

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionScheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available
01

What, why and how

An information disclosure vulnerability exists when Skype for Business is accessed via Internet Explorer, aka 'Skype for Business via Internet Explorer Information Disclosure Vulnerability'.

What

An information disclosure vulnerability exists when Skype for Business is accessed via Internet Explorer, aka 'Skype for Business via Internet Explorer Information Disclosure Vulnerability'.

Why

The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.

How

An attacker operating through a network path may attempt exploitation without authentication after a user interaction. If successful, the issue may obtain information outside the intended access boundary.

What

An information disclosure vulnerability exists when Skype for Business is accessed via Internet Explorer, aka 'Skype for Business via Internet Explorer Information Disclosure Vulnerability'.

Why

The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.

How

An attacker operating through a network path may attempt exploitation without authentication after a user interaction. If successful, the issue may obtain information outside the intended access boundary.

02

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 → vulnerable operation → obtain information outside the intended access boundary
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.
CWE not yet assigned
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:L/I:N/A:N

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.CLowConfidentiality impact: A successful attack can cause a limited loss.INoneIntegrity impact: No direct loss is represented by this metric.ANoneAvailability impact: No direct loss is represented by this metric.
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.
NetworkUnauthenticated
A

Official authority intelligence

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

Cyber Security Agency of Singapore · English · CSA-SB-20200715Security Bulletin 15 Jul 2020

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 15 Jul 2020, published on 15 July 2020. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2020-AVI-426Multiples vulnérabilités dans Microsoft IE

De multiples vulnérabilités ont été corrigées dans Microsoft IE . Elles permettent à un attaquant de provoquer une atteinte à la confidentialité des données et une exécution de code à distance.

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2020-008048Microsoft Internet Explorer 11 における情報を公開される脆弱性

Microsoft Internet Explorer 11 には、Internet Explorer 経由で Skype for Business にアクセスする場合、情報を公開される脆弱性が存在します。 ベンダは、本脆弱性を「Internet Explorer 経由による Skype for Business の情報漏えいの脆弱性」として公開しています。

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-5171MS 7월 보안 위협에 따른 정기 보안 업데이트 권고

, CVE-2020-1365, CVE-2020-1368, CVE-2020-1371, CVE-2020-1373, CVE-2020-1384, CVE-2020-1385, CVE-2020-1390, CVE-2020-1396, CVE-2020-1399, CVE-2020-1402, CVE-2020-1406, CVE-2020-1427, CVE-2020-1428, CVE-2020-1430, CVE-2020-1437, CVE-2020-1438) - 서비스 거부 취약점(CVE-2020-1267) - 정보노출 취약점(CVE-2020-1351, CVE-2020-1389, CVE-2020-1397, CVE-2020-1419, CVE-2020-1468) o 영향 : 원격코드실행 o 중요도 : 긴급 o 관련 KB번호 - 4565524, 4565535, 4565537, 4565540, 4565541, 4566425, 4566426 ##### □ 해결책 o 영향받는 소프트웨어를 이용하는 경우 마이크로소프트사의 보안 패치 적용 4. Internet Explorer 보안 업데이트 ##### □ 설명 o 공격자가 특수하게 제작된 악성 응용 프로그램을 실행할 경우, 원격코드실행을 허용하는 취약점 o 관련취약점 : - 원격코드실행 취약점(CVE-2020-1403) - 정보노출 취약점(CVE-2020-1432) o 영향 : 원격코드실행 o 중요도 : 긴급 o 관련 KB번호 - 4558998, 4565479, 4565483, 4565489, 4565503, 4565508, 4565511, 4565513, 4565524, 4565537, 4565541 ##### □ 해결책 o 영향받는 소프트웨어를 이용하는 경우 마이크로소프트사의 보안 패치 적용 5. Microsoft Office 관련 소프트웨어 보안 업데이트 ##### □ 설명 o 공격자가 특수하게 제작된 악성 응용 프로그램을 실행할 경우, 원격코드실행을 허용하는 취약점 o 관련취약점 : - 원격코드실행 취약점(CVE-2020-1349, CVE-2020-1409, CVE-2020-1446, CVE-2020-1447, CVE-2020-1448, CVE-2020-1449) - 스푸핑 취약점(CVE-2020-1442) - 정보노출 취약점(CVE-2020-1342, CVE-2020-1445) o 영향 : 원격코드실행 o 중요도 : 긴급 o 관련 KB번호 - 4484357, 4484363, 4484381, 4484382, 4484433, 4484438, 4484441, 4484446, 4484450, 4484451, 4484456, 4484458, 4484463 ##### □ 해결책 o 영향받는 소프트웨어를 이

Official advisory ↗
03

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
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.
04

Evidence and provenance

Published 14 Jul 2020 · Last source change 4 Aug 2024, 06:39 UTC · CWE not yet assigned

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-2020-12308
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceUnavailable
NVD statusNVD modified after enrichment

Missing structured fields: CWE classification. Missing data is not evidence of low risk; review the primary advisory.

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.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2020-12308↗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.
Free version - for non-commercial use only.CVE-2020-1432 · cve.blacktree.nl