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Full vulnerability report · 2017
CVE-2017-16391High confidence

The vulnerability is a result of untrusted input that is used to calculate an array index; the calculation occurs in the printing functionality

Unknown · Adobe Acrobat Reader 2017.012.20098 and earlier versions, 2017.011.30066 and earlier versions, 2015.006.30355 and earlier versions, 11.0.22 and earlier versions

Official source article: Adobe APSB17-36 ↗. Check the applicable product and release in the original source.

8.8HighCVSS 3.0
Recommended action
Within 7 days

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

Fix not verified
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityHighOperational priority:High, unchanged from published severity.unchanged

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • EPSS is 6.72% for the current model date.

Compensating controls

  • Restrict the affected network interface to trusted sources where business-safe.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs Unknown Adobe Acrobat Reader 2017.012.20098 and earlier versions, 2017.011.30066 and earlier versions, 2015.006.30355 and earlier versions, 11.0.22 and earlier versions and falls inside the recorded affected range.
  2. Recheck the vendor advisory before scheduling a change because no verified fixed version is currently retained.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: Within 30 daysRemediation target: Within 180 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Optional official sources

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

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

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-2017-7585

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 actionWithin 7 days

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

Fix not verified
01

What, why and how

An issue was discovered in Adobe Acrobat and Reader: 2017.012.20098 and earlier versions, 2017.011.30066 and earlier versions, 2015.006.30355 and earlier versions, and 11.0.22 and earlier versions. The vulnerability is a result of untrusted input that is used to calculate an array index; the calculation occurs in the printing functionality. The vulnerability leads to an operation that can write to a memory location that is outside of the memory addresses allocated for the data structure. The specific scenario leads to a write access to a memory location that does not belong to the relevant process address space.

What

An issue was discovered in Adobe Acrobat and Reader: 2017.012.20098 and earlier versions, 2017.011.30066 and earlier versions, 2015.006.30355 and earlier versions, and 11.0.22 and earlier versions. The vulnerability is a result of untrusted input that is used to calculate an array index; the calculation occurs in the printing functionality. The vulnerability leads to an operation that can write to a memory location that is outside of the memory addresses allocated for the data structure. The specific scenario leads to a write access to a memory location that does not belong to the relevant process address space.

Why

The product uses untrusted input when calculating or using an array index, but the product does not validate or incorrectly validates the index to ensure the index references a valid position within the array.

How

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

What

An issue was discovered in Adobe Acrobat and Reader: 2017.012.20098 and earlier versions, 2017.011.30066 and earlier versions, 2015.006.30355 and earlier versions, and 11.0.22 and earlier versions. The vulnerability is a result of untrusted input that is used to calculate an array index; the calculation occurs in the printing functionality. The vulnerability leads to an operation that can write to a memory location that is outside of the memory addresses allocated for the data structure. The specific scenario leads to a write access to a memory location that does not belong to the relevant process address space.

Why

The product uses untrusted input when calculating or using an array index, but the product does not validate or incorrectly validates the index to ensure the index references a valid position within the array.

How

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

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 → Improper Validation of Array Index → cause the confidentiality, integrity or availability impact described by the vendor
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-129 ↗

CWE-129: Improper Validation of Array Index. The product uses untrusted input when calculating or using an array index, but the product does not validate or incorrectly validates the index to ensure the index references a valid position within the array.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Common Vulnerability Scoring System 3.0: 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
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-129
A

Official authority intelligence

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

Canadian Centre for Cyber Security · English · AV17-168Adobe security updates

APSB17-39 - Adobe Digital Editions APSB17-40 - Adobe Shockwave Player APSB17-41 - Adobe Experience Manager CVE References: CVE-2017-3112, CVE-2017-3114, CVE-2017-11213, CVE-2017-11215, CVE-2017-11225, CVE-2017-11303, CVE-2017-11304, CVE-2017-11291, CVE-2017-11287, CVE-2017-11288, CVE-2017-11289, CVE-2017-11290, CVE-2017-16377, CVE-2017-16378, CVE-2017-16360, CVE-2017-16388, CVE-2017-16389, CVE-2017-16390, CVE-2017-16393, CVE-2017-16398, CVE-2017-16381, CVE-2017-16385, CVE-2017-16392, CVE-2017-16395, CVE-2017-16396, CVE-2017-16363, CVE-2017-16365, CVE-2017-16374, CVE-2017-16384, CVE-2017-16386, CVE-2017-16387, CVE-2017-16368, CVE-2017-16383, CVE-2017-16391, CVE-2017-16410, CVE-2017-16362, CVE-2017-16370, CVE-2017-16376, CVE-2017-16382, CVE-2017-16394, CVE-2017-16397, CVE-2017-16399, CVE-2017-16400, CVE-2017-16401, CVE-2017-16402, CVE-2017-16403, CVE-2017-16404, CVE-2017-16405, CVE-2017-16408, CVE-2017-16409, CVE-2017-16412, CVE-2017-16414, CVE-2017-16417, CVE-2017-16418, CVE-2017-16420, CVE-2017-11293, CVE-2017-16407, CVE-2017-16413, CVE-2017-16415, CVE-2017-16416, CVE-2017-16361, CVE-2017-16366, CVE-2017-16369, CVE-2017-16380, CVE-2017-16419, CVE-2017-16367, CVE-2017-16379, CVE-2017-16406, CVE-2017-16364, CVE-2017-16371, CVE-2017-16372, CVE-2017-16373, CVE-2017-16375, CVE-2017-16411, CVE-2017

Official advisory ↗
CERT-FR · French · CERTFR-2017-AVI-414Multiples vulnérabilités dans Adobe Acrobat et Reader

d?id=CVE-2017-16382 Référence CVE CVE-2017-16383 https://www.cve.org/CVERecord?id=CVE-2017-16383 Référence CVE CVE-2017-16384 https://www.cve.org/CVERecord?id=CVE-2017-16384 Référence CVE CVE-2017-16385 https://www.cve.org/CVERecord?id=CVE-2017-16385 Référence CVE CVE-2017-16386 https://www.cve.org/CVERecord?id=CVE-2017-16386 Référence CVE CVE-2017-16387 https://www.cve.org/CVERecord?id=CVE-2017-16387 Référence CVE CVE-2017-16388 https://www.cve.org/CVERecord?id=CVE-2017-16388 Référence CVE CVE-2017-16389 https://www.cve.org/CVERecord?id=CVE-2017-16389 Référence CVE CVE-2017-16390 https://www.cve.org/CVERecord?id=CVE-2017-16390 Référence CVE CVE-2017-16391 https://www.cve.org/CVERecord?id=CVE-2017-16391 Référence CVE CVE-2017-16392 https://www.cve.org/CVERecord?id=CVE-2017-16392 Référence CVE CVE-2017-16393 https://www.cve.org/CVERecord?id=CVE-2017-16393 Référence CVE CVE-2017-16394 https://www.cve.org/CVERecord?id=CVE-2017-16394 Référence CVE CVE-2017-16395 https://www.cve.org/CVERecord?id=CVE-2017-16395 Référence CVE CVE-2017-16396 https://www.cve.org/CVERecord?id=CVE-2017-16396 Référence CVE CVE-2017-16397 https://www.cve.org/CVERecord?id=CVE-2017-16397 Référence CVE CVE-2017-16398 https://www.cve.org/CVERecord?id=CVE-2017-16398 Référence CVE CVE-2017-16399 https://www.cve.org/CVERecord?id=

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2017-010681Adobe Reader および Acrobat におけるデータ構造体に割り当てられたメモリアドレスの外部にあるメモリロケーションに書き込まれる脆弱性

Adobe Reader および Acrobat には、データ構造体に割り当てられたメモリアドレスの外部にあるメモリロケーションに書き込まれる脆弱性が存在します。

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-4817Adobe 제품군 신규 취약점 보안 업데이트 권고

- 배열의 인덱스 값에 대한 검증 미흡으로 발생하는 원격 코드 실행 취약점(CVE-2017-16391, CVE-2017-16410)

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.
Fix not verified
Affected
Adobe Acrobat Reader 2017.012.20098 and earlier versions, 2017.011.30066 and earlier versions, 2015.006.30355 and earlier versions, 11.0.22 and earlier versions: Adobe Acrobat Reader 2017.012.20098 and earlier versions, 2017.011.30066 and earlier versions, 2015.006.30355 and earlier versions, 11.0.22 and earlier versions
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
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 9 Dec 2017 · Last source change 5 Aug 2024, 20:27 UTC · CWE-129 · Improper Validation of Array Index

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-2017-7585
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceNIST NVD
NVD statusNVD modified after enrichment

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

Material change intelligence

What changed after publication

View recent updates ↗
  1. ENISA EUVD mappingEUVD-2017-7585 was added to the official ENISA EUVD mapping for this CVE.
    Before
    not recorded
    After
    {"euvdId":"EUVD-2017-7585"}
    ENISA EUVD ↗
  2. Vendor guidanceAuthoritative vendor guidance changed: added vendor advisory: helpx.adobe.com/apsb17-36.html.
    Before
    no authoritative guidance recorded
    After
    vendor advisory: helpx.adobe.com/apsb17-36.html
    helpx.adobe.com ↗
  3. SeveritySeverity changed from Unknown to High.
    Before
    Unknown
    After
    High
    NIST NVD ↗
  4. CVSS scoreCVSS score changed from not recorded to 8.8 (CVSS 3.0 · NIST NVD · CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).
    Before
    not recorded
    After
    8.8 (CVSS 3.0 · NIST NVD · CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
    NIST NVD ↗
  5. Catalogue recordCVE added to the BlackTree catalogue.
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
ENISA EUVD · EUVD-2017-7585↗Vendor advisory · Adobe APSB17-36↗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-2017-16391 · cve.blacktree.nl