CVE-2017-9049 / Siemens SSA-398330: libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a heap-based buffer over-read in the xmlDictComputeFastKey function in dict.c

Distribution release	Source package	Vendor state	Fixed version	Evidence
Debian trixietrixie · source	`libxml2`	Vendor fix publishedDebian records a fixed source-package version for this release.	`2.9.4+dfsg1-3.1`	Debian Security Tracker ↗Source updated 22 Oct 2026
Debian bookwormbookworm · source	`libxml2`	Vendor fix publishedDebian records a fixed source-package version for this release.	`2.9.4+dfsg1-3.1`	Debian Security Tracker ↗Source updated 22 Oct 2026
Debian forkyforky · source	`libxml2`	Vendor fix publishedDebian records a fixed source-package version for this release.	`2.9.4+dfsg1-3.1`	Debian Security Tracker ↗Source updated 22 Oct 2026
Debian sidsid · source	`libxml2`	Vendor fix publishedDebian records a fixed source-package version for this release.	`2.9.4+dfsg1-3.1`	Debian Security Tracker ↗Source updated 22 Oct 2026

Recommended actionPatch only the product branches with a verified fix

High technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance. Verified remediation exists for at least one product or source, but 5 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product

What, why and how

libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a heap-based buffer over-read in the xmlDictComputeFastKey function in dict.c. This vulnerability causes programs that use libxml2, such as PHP, to crash. This vulnerability exists because of an incomplete fix for libxml2 Bug 759398.

What

Why

The product reads data past the end, or before the beginning, of the intended buffer.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may disrupt the affected service.

What

Why

The product reads data past the end, or before the beginning, of the intended buffer.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may disrupt the affected service.

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.

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 → Out-of-bounds Read → disrupt the affected service
Attack surface: Network
Privileges required: None: unauthenticated exploitation is possible
User interaction: None
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-125 ↗
CWE-125: Out-of-bounds Read. The product reads data past the end, or before the beginning, of the intended buffer.
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:N/S:U/C:N/I:N/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.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CNoneConfidentiality impact: No direct loss is represented by this metric.INoneIntegrity impact: No direct loss is represented by this metric.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.

NetworkUnauthenticatedDenial of serviceCWE-125Public exploit reference

Official authority intelligence

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

ENISA EUVD · EUVD-2017-17989Official EUVD mapping

Official EUVD record ↗

BSI · German · WID-SEC-2023-1614Tenable Security Nessus Network Monitor: Mehrere Schwachstellen

Ein entfernter, anonymer, authentisierter oder lokaler Angreifer kann mehrere Schwachstellen in Tenable Security Nessus Network Monitor ausnutzen, um beliebigen Code auszuführen, vertrauliche Informationen offenzulegen, einen Denial-of-Service-Zustand auszulösen und Daten zu manipulieren.

Official advisory ↗

BSI · German · WID-SEC-2025-0426libxml2: Mehrere Schwachstellen ermöglichen Denial of Service

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in libxml2 ausnutzen, um einen Denial of Service Angriff durchzuführen.

Official advisory ↗

CERT-FR · French · CERTFR-2023-AVI-1015Multiples vulnérabilités dans les produits Siemens

/CVERecord?id=CVE-2017-0663 Référence CVE CVE-2017-16931 https://www.cve.org/CVERecord?id=CVE-2017-16931 Référence CVE CVE-2017-16932 https://www.cve.org/CVERecord?id=CVE-2017-16932 Référence CVE CVE-2017-17512 https://www.cve.org/CVERecord?id=CVE-2017-17512 Référence CVE CVE-2017-18258 https://www.cve.org/CVERecord?id=CVE-2017-18258 Référence CVE CVE-2017-7375 https://www.cve.org/CVERecord?id=CVE-2017-7375 Référence CVE CVE-2017-7376 https://www.cve.org/CVERecord?id=CVE-2017-7376 Référence CVE CVE-2017-9047 https://www.cve.org/CVERecord?id=CVE-2017-9047 Référence CVE CVE-2017-9048 https://www.cve.org/CVERecord?id=CVE-2017-9048 Référence CVE CVE-2017-9049 https://www.cve.org/CVERecord?id=CVE-2017-9049 Référence CVE CVE-2017-9050 https://www.cve.org/CVERecord?id=CVE-2017-9050 Référence CVE CVE-2018-0495 https://www.cve.org/CVERecord?id=CVE-2018-0495 Référence CVE CVE-2018-12886 https://www.cve.org/CVERecord?id=CVE-2018-12886 Référence CVE CVE-2018-14404 https://www.cve.org/CVERecord?id=CVE-2018-14404 Référence CVE CVE-2018-14567 https://www.cve.org/CVERecord?id=CVE-2018-14567 Référence CVE CVE-2018-18928 https://www.cve.org/CVERecord?id=CVE-2018-18928 Référence CVE CVE-2018-19591 https://www.cve.org/CVERecord?id=CVE-2018-19591 Référence CVE CVE-2018-20482 https://www.cve.org/CVERecord?id=CVE-2

Official advisory ↗

CERT-FR · French · CERTFR-2023-AVI-0499Multiples vulnérabilités dans Tenable Nessus Network Monitor

cve.org/CVERecord?id=CVE-2017-18258 Référence CVE CVE-2017-5029 https://www.cve.org/CVERecord?id=CVE-2017-5029 Référence CVE CVE-2017-5130 https://www.cve.org/CVERecord?id=CVE-2017-5130 Référence CVE CVE-2017-5969 https://www.cve.org/CVERecord?id=CVE-2017-5969 Référence CVE CVE-2017-7375 https://www.cve.org/CVERecord?id=CVE-2017-7375 Référence CVE CVE-2017-7376 https://www.cve.org/CVERecord?id=CVE-2017-7376 Référence CVE CVE-2017-8872 https://www.cve.org/CVERecord?id=CVE-2017-8872 Référence CVE CVE-2017-9047 https://www.cve.org/CVERecord?id=CVE-2017-9047 Référence CVE CVE-2017-9048 https://www.cve.org/CVERecord?id=CVE-2017-9048 Référence CVE CVE-2017-9049 https://www.cve.org/CVERecord?id=CVE-2017-9049 Référence CVE CVE-2017-9050 https://www.cve.org/CVERecord?id=CVE-2017-9050 Référence CVE CVE-2018-14404 https://www.cve.org/CVERecord?id=CVE-2018-14404 Référence CVE CVE-2018-14567 https://www.cve.org/CVERecord?id=CVE-2018-14567 Référence CVE CVE-2018-9251 https://www.cve.org/CVERecord?id=CVE-2018-9251 Référence CVE CVE-2019-11068 https://www.cve.org/CVERecord?id=CVE-2019-11068 Référence CVE CVE-2019-12900 https://www.cve.org/CVERecord?id=CVE-2019-12900 Référence CVE CVE-2019-13117 https://www.cve.org/CVERecord?id=CVE-2019-13117 Référence CVE CVE-2019-13118 https://www.cve.org/CVERecord?id=CVE-2

Official advisory ↗

CERT-FR · French · CERTFR-2018-AVI-293Multiples vulnérabilités dans Tenable Nessus Agent

.cve.org/CVERecord?id=CVE-2017-6004 Référence CVE CVE-2017-7186 https://www.cve.org/CVERecord?id=CVE-2017-7186 Référence CVE CVE-2017-7244 https://www.cve.org/CVERecord?id=CVE-2017-7244 Référence CVE CVE-2017-7245 https://www.cve.org/CVERecord?id=CVE-2017-7245 Référence CVE CVE-2017-7246 https://www.cve.org/CVERecord?id=CVE-2017-7246 Référence CVE CVE-2017-7375 https://www.cve.org/CVERecord?id=CVE-2017-7375 Référence CVE CVE-2017-8872 https://www.cve.org/CVERecord?id=CVE-2017-8872 Référence CVE CVE-2017-9047 https://www.cve.org/CVERecord?id=CVE-2017-9047 Référence CVE CVE-2017-9048 https://www.cve.org/CVERecord?id=CVE-2017-9048 Référence CVE CVE-2017-9049 https://www.cve.org/CVERecord?id=CVE-2017-9049 Référence CVE CVE-2017-9050 https://www.cve.org/CVERecord?id=CVE-2017-9050 Référence CVE CVE-2017-9233 https://www.cve.org/CVERecord?id=CVE-2017-9233 Référence CVE CVE-2018-0733 https://www.cve.org/CVERecord?id=CVE-2018-0733 Référence CVE CVE-2018-0739 https://www.cve.org/CVERecord?id=CVE-2018-0739 Référence CVE CVE-2018-11214 https://www.cve.org/CVERecord?id=CVE-2018-11214 Référence CVE CVE-2018-9251 https://www.cve.org/CVERecord?id=CVE-2018-9251 Gestion détaillée du document le 15 juin 2018 Version initiale Alertes Avis Bulletins d’actualités Mentions légales Conditions générales À propos Cont

Official advisory ↗

CERT-FR · French · CERTFR-2018-AVI-288Multiples vulnérabilités dans Tenable Nessus

.cve.org/CVERecord?id=CVE-2017-6004 Référence CVE CVE-2017-7186 https://www.cve.org/CVERecord?id=CVE-2017-7186 Référence CVE CVE-2017-7244 https://www.cve.org/CVERecord?id=CVE-2017-7244 Référence CVE CVE-2017-7245 https://www.cve.org/CVERecord?id=CVE-2017-7245 Référence CVE CVE-2017-7246 https://www.cve.org/CVERecord?id=CVE-2017-7246 Référence CVE CVE-2017-7375 https://www.cve.org/CVERecord?id=CVE-2017-7375 Référence CVE CVE-2017-8872 https://www.cve.org/CVERecord?id=CVE-2017-8872 Référence CVE CVE-2017-9047 https://www.cve.org/CVERecord?id=CVE-2017-9047 Référence CVE CVE-2017-9048 https://www.cve.org/CVERecord?id=CVE-2017-9048 Référence CVE CVE-2017-9049 https://www.cve.org/CVERecord?id=CVE-2017-9049 Référence CVE CVE-2017-9050 https://www.cve.org/CVERecord?id=CVE-2017-9050 Référence CVE CVE-2017-9233 https://www.cve.org/CVERecord?id=CVE-2017-9233 Référence CVE CVE-2018-11214 https://www.cve.org/CVERecord?id=CVE-2018-11214 Référence CVE CVE-2018-9251 https://www.cve.org/CVERecord?id=CVE-2018-9251 Gestion détaillée du document le 14 juin 2018 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 Défens

Official advisory ↗

JVN iPedia · Japanese · JVNDB-2017-004195libxml2 におけるバッファエラーの脆弱性

libxml2 には、バッファエラーの脆弱性が存在します。本脆弱性は、libxml2 Bug 759398 に対する修正が不完全だったことに起因する問題です。

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.: Fix availability varies by product
Affected: libxml2 as component of SUSE Linux Enterprise Server 11 SP4 LTSS
SLES 15 SP1 CHOST Images for Amazon EC2
SLES 15 SP2 CHOST Images for Amazon EC2
SLES 15 SP4 CHOST Images for Amazon EC2
SLES 15 SP5 CHOST Images for Amazon EC2
SLES 15 SP1 CHOST Images for Google
SLES 15 SP2 CHOST Images for Google
SLES 15 SP4 CHOST Images for Google
SLES 15 SP5 CHOST Images for Google
SLES 15 SP1 CHOST Images for Microsoft Azure
SLES 15 SP2 CHOST Images for Microsoft Azure
SLES 15 SP4 CHOST Images for Microsoft Azure
SLES 15 SP5 CHOST Images for Microsoft Azure
Fixed: Update to V3.1.5 or later version
Action: Use the product-specific evidence above. Patch only products with a verified fixed release, and keep every affected or under-investigation state without a matching fix in the remediation queue.
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.

Official vendor articles7 stored documents

Linked articles are downloaded and versioned as source evidence. A CVE mention or approved update relationship does not, by itself, verify a fix for every product branch.

About the security content of iOS 11 - Apple Support →Original publisher ↗Searchable text snapshot · Captured 17 Oct 2026Apple Store Mac iPad iPhone Watch Vision AirPods Home Entertainment Accessories Support 0 + "},{"name":"compact","assetInline":" "}],"analyticsAttributes":[{"name":"data-analytics-title","value":"apple home"}]},{"id":"ad4a2a26eb4836393385e9f6c61b526b4a3cb31409c5ed8730ce7a704dd7132f","name":"store","text":"
About the security content of tvOS 11 - Apple Support →Original publisher ↗Searchable text snapshot · Captured 17 Oct 2026Apple Store Mac iPad iPhone Watch Vision AirPods Home Entertainment Accessories Support 0 + "},{"name":"compact","assetInline":" "}],"analyticsAttributes":[{"name":"data-analytics-title","value":"apple home"}]},{"id":"ad4a2a26eb4836393385e9f6c61b526b4a3cb31409c5ed8730ce7a704dd7132f","name":"store","text":"
About the security content of watchOS 4 - Apple Support →Original publisher ↗Searchable text snapshot · Captured 17 Oct 2026Apple Store Mac iPad iPhone Watch Vision AirPods Home Entertainment Accessories Support 0 + "},{"name":"compact","assetInline":" "}],"analyticsAttributes":[{"name":"data-analytics-title","value":"apple home"}]},{"id":"ad4a2a26eb4836393385e9f6c61b526b4a3cb31409c5ed8730ce7a704dd7132f","name":"store","text":"
About the security content of iTunes 12.7 for Windows - Apple Support →Original publisher ↗Searchable text snapshot · Captured 17 Oct 2026Apple Store Mac iPad iPhone Watch Vision AirPods Home Entertainment Accessories Support 0 + "},{"name":"compact","assetInline":" "}],"analyticsAttributes":[{"name":"data-analytics-title","value":"apple home"}]},{"id":"ad4a2a26eb4836393385e9f6c61b526b4a3cb31409c5ed8730ce7a704dd7132f","name":"store","text":"
About the security content of iCloud for Windows 7.0 - Apple Support →Original publisher ↗Searchable text snapshot · Captured 17 Oct 2026Apple Store Mac iPad iPhone Watch Vision AirPods Home Entertainment Accessories Support 0 + "},{"name":"compact","assetInline":" "}],"analyticsAttributes":[{"name":"data-analytics-title","value":"apple home"}]},{"id":"ad4a2a26eb4836393385e9f6c61b526b4a3cb31409c5ed8730ce7a704dd7132f","name":"store","text":"
About the security content of macOS High Sierra 10.13 - Apple Support →Original publisher ↗Searchable text snapshot · Captured 17 Oct 2026Apple Store Mac iPad iPhone Watch Vision AirPods Home Entertainment Accessories Support 0 + "},{"name":"compact","assetInline":" "}],"analyticsAttributes":[{"name":"data-analytics-title","value":"apple home"}]},{"id":"ad4a2a26eb4836393385e9f6c61b526b4a3cb31409c5ed8730ce7a704dd7132f","name":"store","text":"
About the security content of macOS High Sierra 10.13.1, Security Update 2017-001 Sierra, and Security Update 2017-004 El Capitan - Apple Support →Original publisher ↗Searchable text snapshot · Captured 17 Oct 2026Apple Store Mac iPad iPhone Watch Vision AirPods Home Entertainment Accessories Support 0 + "},{"name":"compact","assetInline":" "}],"analyticsAttributes":[{"name":"data-analytics-title","value":"apple home"}]},{"id":"ad4a2a26eb4836393385e9f6c61b526b4a3cb31409c5ed8730ce7a704dd7132f","name":"store","text":"

Evidence and provenance

Published 18 May 2017 · Last source change 14 Oct 2026, 06:30 UTC · CWE-125 · Out-of-bounds Read

CVE recordCVE.org · 5.2

CVSS sourceCISA ADP

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-2017-17989

Product sourceVendor CSAF · SUSE Product Security Team

Remediation sourceVendor CSAF · SUSE Product Security Team

CWE sourceCISA ADP

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 ↗

14 Oct 2026, 06:30 UTC
Vendor guidanceAuthoritative vendor guidance changed: added remediation: openwall.com/1; removed patch: cert-portal.siemens.com/ssa-398330.html; removed remediation: cert-portal.siemens.com/ssa-398330.html.
Before
patch: cert-portal.siemens.com/ssa-398330.html · patch: openwall.com/1 · remediation: cert-portal.siemens.com/ssa-398330.html
After
patch: openwall.com/1 · remediation: openwall.com/1
openwall.com ↗
14 Oct 2026, 06:30 UTC
Affected versionsThe structured affected or fixed version information changed.
Before
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP: V3.1.0 < V3.1.5; SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP: V3.1.0 < V3.1.5; SIPLUS S7-1500 CPU 1518-4 PN/DP MFP: V3.1.0 < V3.1.5 · Fixed: Update to V3.1.5 or later version
After
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP: V3.1.0 < V3.1.5; SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP: V3.1.0 < V3.1.5; SIPLUS S7-1500 CPU 1518-4 PN/DP MFP: V3.1.0 < V3.1.5 · 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.
Other authority ↗
14 Oct 2026, 06:30 UTC
Vendor guidanceAuthoritative vendor guidance changed: added remediation: openwall.com/1; removed remediation: access.redhat.com/CVE-2017-9049.
Before
patch: openwall.com/1 · remediation: access.redhat.com/CVE-2017-9049
After
patch: openwall.com/1 · remediation: openwall.com/1
openwall.com ↗
14 Oct 2026, 06:30 UTC
Affected versionsThe structured affected or fixed version information changed.
Before
n/a · Fixed: The References section of this erratum contains a download link (you must log in to download the update). Before applying the update, back up your existing Red Hat JBoss Core Services installation (including all applications and configuration files).
After
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP: V3.1.0 < V3.1.5; SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP: V3.1.0 < V3.1.5; SIPLUS S7-1500 CPU 1518-4 PN/DP MFP: V3.1.0 < V3.1.5 · 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.
Other authority ↗
13 Oct 2026, 00:00 UTC
Affected versionsThe structured affected or fixed version information changed.
Before
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP: V3.1.0 < V3.1.5; SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP: V3.1.0 < V3.1.5; SIPLUS S7-1500 CPU 1518-4 PN/DP MFP: V3.1.0 < V3.1.5 · 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
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP: V3.1.0 < V3.1.5; SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP: V3.1.0 < V3.1.5; SIPLUS S7-1500 CPU 1518-4 PN/DP MFP: V3.1.0 < V3.1.5 · Fixed: Update to V3.1.5 or later version
Siemens ProductCERT ↗
23 Sep 2026, 19:26 UTC
Vendor guidanceAuthoritative vendor guidance changed from remediation: access.redhat.com/CVE-2017-9049 to advisory no longer present in the provider's current catalogue.
Before
remediation: access.redhat.com/CVE-2017-9049
After
advisory no longer present in the provider's current catalogue
Red Hat Product Security ↗
21 Sep 2026, 05:37 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 · Fixed: The References section of this erratum contains a download link (you must log in to download the update). Before applying the update, back up your existing Red Hat JBoss Core Services installation (including all applications and configuration files).
Red Hat Product Security ↗
1 Sep 2026, 02:42 UTC
ENISA EUVD mappingEUVD-2017-17989 was added to the official ENISA EUVD mapping for this CVE.
Before
not recorded
After
{"euvdId":"EUVD-2017-17989"}
ENISA EUVD ↗
18 Dec 2025, 14:20 UTC
Vendor guidanceAuthoritative vendor guidance changed: added patch: openwall.com/1; added remediation: openwall.com/1; removed vendor advisory: debian.org/dsa-3952; removed vendor advisory: security.gentoo.org/201711-01.
Before
vendor advisory: debian.org/dsa-3952 · vendor advisory: security.gentoo.org/201711-01
After
patch: openwall.com/1 · remediation: openwall.com/1
openwall.com ↗
18 Dec 2025, 14:20 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 ↗
18 Dec 2025, 14:20 UTC
Remediation statusRemediation status changed from Awaiting fix to Patch available.
Before
Awaiting fix
After
Patch available
openwall.com ↗
18 Dec 2025, 14:20 UTC
Public exploit evidencePublic exploit evidence changed from Public exploit reference to Public exploit reference.
Before
Public exploit reference
After
Public exploit reference
openwall.com ↗
18 Dec 2025, 14:20 UTC
Catalogue recordCVE added to the BlackTree catalogue.
CNA ↗

2017-05-18CVE published

2026-10-14Fixed release or patch reference recorded

2026-10-13Fixed release recorded from official guidance

ENISA EUVD · EUVD-2017-17989↗Vendor CSAF · SUSE Product Security Team↗Siemens ProductCERT security advisory · Siemens SSA-398330↗CISA Vulnrichment SSVC evidence↗Public exploit 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.

libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a heap-based buffer over-read in the xmlDictComputeFastKey function in dict.c

Published severity in operational context

Evidence used

Compensating controls

Verification

Remediation availability differs by product scope

Release-specific package status

Authoritative vendor CSAF and VEX advisories

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-2017-17989

What, why and how

Exploit reality and attack path

Official authority intelligence

Patch and workaround

Evidence and provenance

What changed after publication