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CVE Record

CVE-2025-13502: Webkit: webkitgtk / wpe webkit: out-of-bounds read and integer underflow vulnerability leading to dos

A flaw was found in WebKitGTK and WPE WebKit. This vulnerability allows an out-of-bounds read and integer underflow, leading to a UIProcess crash (DoS) via a crafted payload to the GLib remote inspector server.

HighCVSS 7.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2025-13502 is a high-severity denial-of-service issue in WebKitGTK and WPE WebKit. A crafted payload sent to the GLib remote inspector server can crash the UI process, disrupting applications that rely on affected WebKit components.

Executive priority

Treat this as a high-priority availability risk, not a confirmed breach indicator. Patch affected Linux fleets promptly where WebKitGTK/WPE WebKit is installed, with faster action for systems supporting customer-facing or operationally critical applications.

Technical view

The flaw is described as an out-of-bounds read and integer underflow, mapped to CWE-125. Red Hat lists affected webkitgtk4 and webkit2gtk3 packages across RHEL 7 ELS, RHEL 8 update streams, and RHEL 9 update streams. CVSS 3.1 is 7.5 with network attack vector and high availability impact.

Likely exposure

Exposure is most likely on Linux systems using affected WebKitGTK or WPE WebKit packages, especially Red Hat Enterprise Linux deployments listed in the advisory data. Risk depends on whether the GLib remote inspector server is present and reachable.

Exploitation context

The source bundle does not cite active exploitation, and KEV status is false. The CVSS vector indicates network reachability, low complexity, no privileges, and no user interaction, but the documented impact is UIProcess crash rather than code execution.

Researcher notes

Evidence supports denial of service through a crafted payload to the GLib remote inspector server. The bundle does not provide exploit proof, fixed upstream commits, or detailed remediation beyond Red Hat advisory references, so avoid expanding scope beyond listed products and packages.

Mitigation direction

  • Apply the relevant Red Hat security advisory updates for affected WebKit packages.
  • Check WebKitGTK, WPE WebKit, and OS vendor guidance for fixed package versions.
  • Restrict exposure of the GLib remote inspector server where it is enabled.
  • Prioritize systems where WebKit-based applications support critical workflows.

Validation and detection

  • Inventory installed webkitgtk4, webkitgtk, and webkit2gtk3 packages.
  • Map hosts to the affected RHEL products and package versions listed in advisories.
  • Confirm whether the GLib remote inspector server is enabled or reachable.
  • Verify vendor security updates are installed after patching.
Prepared
Confidence
medium
Sources
12

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · low confidence lookup

CWE-125: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2025-13502 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
High
CVSS
7.5 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
5Timeline events
1ADP providers
15Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: yesTechnical Impact: partial

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
7.5CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6redhat

Vulnerability scoring details

Base CVSS 3.1 score

7.5High
CVSS 3.1 vector shape for CVE-2025-13502Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. Source timelineredhat

    Reported to Red Hat.

  2. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  3. Source timelineredhat

    Made public.

  4. CVE publishedCVE Program

    The CVE record was published.

  5. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
The WebKitGTK Teamwebkitgtkwebkitgtk, 0unaffected
Red HatRed Hat Enterprise Linux 7 Extended Lifecycle Supportwebkitgtk4, 0:2.50.3-2.el7_9affected
Red HatRed Hat Enterprise Linux 8webkit2gtk3, 0:2.50.3-1.el8_10affected
Red HatRed Hat Enterprise Linux 8.2 Advanced Update Supportwebkit2gtk3, 0:2.50.3-2.el8_2affected
Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Supportwebkit2gtk3, 0:2.50.3-2.el8_4affected
Red HatRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-Onwebkit2gtk3, 0:2.50.3-2.el8_4affected
Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Supportwebkit2gtk3, 0:2.50.3-2.el8_6affected
Red HatRed Hat Enterprise Linux 8.6 Telecommunications Update Servicewebkit2gtk3, 0:2.50.3-2.el8_6affected
Red HatRed Hat Enterprise Linux 8.6 Update Services for SAP Solutionswebkit2gtk3, 0:2.50.3-2.el8_6affected
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Servicewebkit2gtk3, 0:2.50.3-2.el8_8affected
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutionswebkit2gtk3, 0:2.50.3-2.el8_8affected
Red HatRed Hat Enterprise Linux 9webkit2gtk3, 0:2.50.3-1.el9_7affected
Red HatRed Hat Enterprise Linux 9.0 Update Services for SAP Solutionswebkit2gtk3, 0:2.50.3-1.el9_0affected
Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP Solutionswebkit2gtk3, 0:2.50.3-1.el9_2affected
Red HatRed Hat Enterprise Linux 9.4 Extended Update Supportwebkit2gtk3, 0:2.50.3-1.el9_4affected
Red HatRed Hat Enterprise Linux 9.6 Extended Update Supportwebkit2gtk3, 0:2.50.3-1.el9_6affected
Red HatRed Hat Enterprise Linux 6webkitgtkunknown
Red HatRed Hat Enterprise Linux 7webkitgtk3affected
Weakness

CWE details

CWE-125

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-125 · source CWE mapping

Out-of-bounds Read

Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

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