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CVE-2025-6021Proof of concept (PoC) published · CISASuited to automated attack · CISA

Libxml2: integer overflow in xmlbuildqname() leads to stack buffer overflow in libxml2

CVSS score

7.5

EPSS probability

%1.4

Risk score

0.1

Published

1 y ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Patch status has not yet been verified

Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.

Impact on My Inventory

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Vulnerability description

DayBreach CVE AI Research

CVE-2025-6021 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.

A flaw was found in libxml2's xmlBuildQName function, where integer overflows in buffer size calculations can lead to a stack-based buffer overflow. This issue can result in memory corruption or a denial of service when processing crafted input.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2025-6021 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1redhatlibxml2 View
2Red HatRed Hat Enterprise Linux 10 View
3Red HatRed Hat Enterprise Linux 7 Extended Lifecycle Support View
4Red HatRed Hat Enterprise Linux 8 View
5Red HatRed Hat Enterprise Linux 8.2 Advanced Update Support View
6Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support View
7Red HatRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On View
8Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support View
9Red HatRed Hat Enterprise Linux 8.6 Telecommunications Update Service View
10Red HatRed Hat Enterprise Linux 8.6 Update Services for SAP Solutions View
11Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Service View
12Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions View
13Red HatRed Hat Enterprise Linux 9 View
14Red HatRed Hat Enterprise Linux 9.0 Update Services for SAP Solutions View
15Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP Solutions View
16Red HatRed Hat Enterprise Linux 9.4 Extended Update Support View
17Red HatRed Hat OpenShift Container Platform 4.12 View
18Red HatRed Hat OpenShift Container Platform 4.13 View
19Red HatRed Hat OpenShift Container Platform 4.14 View
20Red HatRed Hat OpenShift Container Platform 4.15 View
21Red HatRed Hat OpenShift Container Platform 4.16 View
22Red HatRed Hat OpenShift Container Platform 4.17 View
23Red HatRed Hat OpenShift Container Platform 4.18 View
24Red HatRed Hat OpenShift Container Platform 4.19 View
25Red HatRed Hat Discovery 2 View
26Red HatRed Hat Hardened Images View
27Red HatRed Hat Insights proxy 1.5 View
28Red HatRed Hat Enterprise Linux 6 View
29Red HatRed Hat OpenShift Container Platform 4 View
30xmlsoftlibxml2 View
31redhatjboss core services View
32redhatopenshift container platform View
33redhatopenshift container platform View
34redhatopenshift container platform View
35redhatopenshift container platform View
36redhatopenshift container platform View
37redhatopenshift container platform View
38redhatopenshift container platform View
39redhatopenshift container platform for arm64 View
40redhatopenshift container platform for arm64 View
41redhatopenshift container platform for arm64 View
42redhatopenshift container platform for arm64 View
43redhatopenshift container platform for arm64 View
44redhatopenshift container platform for arm64 View
45redhatopenshift container platform for ibm z View
46redhatopenshift container platform for ibm z View
47redhatopenshift container platform for ibm z View
48redhatopenshift container platform for ibm z View
49redhatopenshift container platform for ibm z View
50redhatopenshift container platform for ibm z View
51redhatopenshift container platform for linuxone View
52redhatopenshift container platform for linuxone View
53redhatopenshift container platform for linuxone View
54redhatopenshift container platform for linuxone View
55redhatopenshift container platform for linuxone View
56redhatopenshift container platform for linuxone View
57redhatopenshift container platform for power View
58redhatopenshift container platform for power View
59redhatopenshift container platform for power View
60redhatopenshift container platform for power View
61redhatopenshift container platform for power View
62redhatopenshift container platform for power View
63redhatenterprise linux View
64redhatenterprise linux View
65redhatenterprise linux View
66redhatenterprise linux eus View
67redhatenterprise linux eus View
68redhatenterprise linux eus View
69redhatenterprise linux eus View
70redhatenterprise linux eus View
71redhatenterprise linux eus View
72redhatenterprise linux for arm 64 View
73redhatenterprise linux for arm 64 View
74redhatenterprise linux for arm 64 View
75redhatenterprise linux for arm 64 View
76redhatenterprise linux for arm 64 eus View
77redhatenterprise linux for arm 64 eus View
78redhatenterprise linux for arm 64 eus View
79redhatenterprise linux for ibm z systems View
80redhatenterprise linux for ibm z systems View
81redhatenterprise linux for ibm z systems View
82redhatenterprise linux for ibm z systems eus View
83redhatenterprise linux for ibm z systems eus View
84redhatenterprise linux for ibm z systems eus View
85redhatenterprise linux for ibm z systems eus View
86redhatenterprise linux for power little endian View
87redhatenterprise linux for power little endian View
88redhatenterprise linux for power little endian View
89redhatenterprise linux for power little endian eus View
90redhatenterprise linux for power little endian eus View
91redhatenterprise linux for power little endian eus View
92redhatenterprise linux server View
93redhatenterprise linux server aus View
94redhatenterprise linux server aus View
95redhatenterprise linux server aus View
96redhatenterprise linux server aus View
97redhatenterprise linux server aus View
98redhatenterprise linux server aus View
99redhatenterprise linux server for power little endian update services for sap solutions View
100redhatenterprise linux server tus View
101redhatin-vehicle operating system View
Total affected vendors: 3|Products: 101

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
7.5CVSS V3_1HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVE CNA
7.5CVSS V31HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HNVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-6021 is associated with the following CWEs:

CWE-787: Out-of-bounds Write

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-6021 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden
PermissionsGerekmiyor
UserGerekmiyor

Official Sources and Advisories

RHSA-2025:10630vendor-advisoryRHSA-2025:10698vendor-advisoryRHSA-2025:10699vendor-advisoryRHSA-2025:11580vendor-advisoryRHSA-2025:11673vendor-advisoryRHSA-2025:12098vendor-advisoryRHSA-2025:12099vendor-advisoryRHSA-2025:12199vendor-advisoryRHSA-2025:12237vendor-advisoryRHSA-2025:12239vendor-advisory

CVSS Vector Radar Chart

7.5 / 10
Attack VectorNetworkComplexityLowPrivilegesNoneUser Interact.NoneConfidentialityLowIntegrityNoneAvailabilityHigh

Vulnerability Scoring Details

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone required
User InteractionNone required
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)None
Availability (Erişilebilirlik)High

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

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Red Hat
X
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Weakness Type (CWE & CAPEC)

CWE-787

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