CVE-2019-8162 / Adobe APSB19-49: Adobe Adobe Acrobat and Reader: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Recommended actionWithin 7 days

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

Patch available

What, why and how

Adobe Acrobat and Reader versions , 2019.012.20040 and earlier, 2017.011.30148 and earlier, 2017.011.30148 and earlier, 2015.006.30503 and earlier, and 2015.006.30503 and earlier have a race condition vulnerability. Successful exploitation could lead to arbitrary code execution .

What

Why

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may execute code or commands in the affected security context.

What

Why

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 → Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') → execute code or commands in the affected security context
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-362 ↗
CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition'). The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.
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: 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 executionCWE-362

Official authority intelligence

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

ENISA EUVD · EUVD-2019-17567Official EUVD mapping

0 linked advisory records.

Official EUVD record ↗

CERT-FR · French · CERTFR-2019-AVI-505Multiples vulnérabilités dans Adobe Acrobat et Reader

dans Adobe Acrobat et Reader. Elles permettent à un attaquant de provoquer une exécution de code arbitraire et une atteinte à la confidentialité des données. Solution Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation). Documentation Bulletin de sécurité Adobe APSB19-49 du 15 octobre 2019 https://helpx.adobe.com/security/products/acrobat/apsb19-49.html Référence CVE CVE-2019-8064 https://www.cve.org/CVERecord?id=CVE-2019-8064 Référence CVE CVE-2019-8160 https://www.cve.org/CVERecord?id=CVE-2019-8160 Référence CVE CVE-2019-8161 https://www.cve.org/CVERecord?id=CVE-2019-8161 Référence CVE CVE-2019-8162 https://www.cve.org/CVERecord?id=CVE-2019-8162 Référence CVE CVE-2019-8163 https://www.cve.org/CVERecord?id=CVE-2019-8163 Référence CVE CVE-2019-8164 https://www.cve.org/CVERecord?id=CVE-2019-8164 Référence CVE CVE-2019-8165 https://www.cve.org/CVERecord?id=CVE-2019-8165 Référence CVE CVE-2019-8166 https://www.cve.org/CVERecord?id=CVE-2019-8166 Référence CVE CVE-2019-8167 https://www.cve.org/CVERecord?id=CVE-2019-8167 Référence CVE CVE-2019-8168 https://www.cve.org/CVERecord?id=CVE-2019-8168 Référence CVE CVE-2019-8169 https://www.cve.org/CVERecord?id=CVE-2019-8169 Référence CVE CVE-2019-8170 https://www.cve.org/CVERecord?id=CVE-2019-8170 Ré

Official advisory ↗

JVN iPedia · Japanese · JVNDB-2019-010981Adobe Reader および Acrobat における競合状態に関する脆弱性

Adobe Reader および Acrobat には、競合状態に関する脆弱性が存在します。

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: Adobe Acrobat and Reader: 2019.012.20040 and earlier, 2017.011.30148 and earlier, 2017.011.30148 and earlier, 2015.006.30503 and earlier, and 2015.006.30503 and earlier versions
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 17 Oct 2019 · Last source change 4 Aug 2024, 21:10 UTC · CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

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-2019-17567

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 ↗

1 Sep 2026, 02:42 UTC
ENISA EUVD mappingEUVD-2019-17567 was added to the official ENISA EUVD mapping for this CVE.
Before
not recorded
After
{"euvdId":"EUVD-2019-17567"}
ENISA EUVD ↗
4 Aug 2024, 21:10 UTC
Vendor guidanceAuthoritative vendor guidance changed: added patch: helpx.adobe.com/apsb19-49.html; added remediation: helpx.adobe.com/apsb19-49.html.
Before
no authoritative guidance recorded
After
patch: helpx.adobe.com/apsb19-49.html · remediation: helpx.adobe.com/apsb19-49.html
helpx.adobe.com ↗
4 Aug 2024, 21:10 UTC
Affected versionsThe structured affected or fixed version information changed.
Before
2019.012.20040 and earlier, 2017.011.30148 and earlier, 2017.011.30148 and earlier, 2015.006.30503 and earlier, and 2015.006.30503 and earlier versions · Fixed: No fixed version is explicitly recorded in the structured CVE data.
After
2019.012.20040 and earlier, 2017.011.30148 and earlier, 2017.011.30148 and earlier, 2015.006.30503 and earlier, and 2015.006.30503 and earlier versions · 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 ↗
4 Aug 2024, 21:10 UTC
Remediation statusRemediation status changed from Awaiting fix to Patch available.
Before
Awaiting fix
After
Patch available
helpx.adobe.com ↗
4 Aug 2024, 21:10 UTC
SeveritySeverity changed from Unknown to High.
Before
Unknown
After
High
NIST NVD ↗
4 Aug 2024, 21:10 UTC
CVSS scoreCVSS score changed from not recorded to 8.1 (CVSS 3.1 · NIST NVD · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).
Before
not recorded
After
8.1 (CVSS 3.1 · NIST NVD · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)
NIST NVD ↗
4 Aug 2024, 21:10 UTC
Catalogue recordCVE added to the BlackTree catalogue.
CNA ↗

2019-10-17CVE published

2024-08-04Fixed release or patch reference recorded

ENISA EUVD · EUVD-2019-17567↗CVE authority or vendor reference · Adobe APSB19-49↗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.

Adobe Adobe Acrobat and Reader: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Published severity in operational context

Evidence used

Compensating controls

Verification

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-2019-17567