CVE-2025-6558

CRITICALPre-NVD 8.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2025-07-22), indicating real-world exploitation has been confirmed by US federal agencies. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 8.8 retained for reference (NVD's own analysis pending). Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa-adp, cisa_kev, epss, ghsa
Trending — 5 sources updated this weekExploited in the wild
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 9%CVSS: 8.8Exploit: cisa kev · ssvc active · public exploitExposed: 0

A fix is available — apply it.

Insufficient validation of untrusted input in ANGLE and GPU in Google Chrome prior to 138.0.7204.157 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)

CVSS v3
8.8
Vendor severity
HIGHper Google (Chromium)Vendor's own band, not a CVSS rating — advisory text: (Chromium security severity: High)
EG Score
9.0(high)
EG Risk
81(Attend)
EG Risk 81/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
9%
EPSS %ILE
95%
KEV
⚠ Exploited

Published

July 15, 2025

Last Modified

June 17, 2026

Advisory Details (10)

Auto-updated Jun 1, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-6558
generic Patch Available

[SECURITY] [DLA 4276-1] webkit2gtk security update

https://lists.debian.org/debian-lts-announce/2025/08/msg00015.html
generic

oss-security - WebKitGTK and WPE WebKit Security Advisory WSA-2025-0005

http://www.openwall.com/lists/oss-security/2025/08/02/1
generic

Full Disclosure: APPLE-SA-07-29-2025-8 visionOS 2.6

http://seclists.org/fulldisclosure/2025/Jul/37
generic

Full Disclosure: APPLE-SA-07-29-2025-6 watchOS 11.6

http://seclists.org/fulldisclosure/2025/Jul/35
generic

Full Disclosure: APPLE-SA-07-29-2025-3 macOS Sequoia 15.6

http://seclists.org/fulldisclosure/2025/Jul/32
generic

Full Disclosure: APPLE-SA-07-29-2025-1 iOS 18.6 and iPadOS 18.6

http://seclists.org/fulldisclosure/2025/Jul/30
generic

Full Disclosure: APPLE-SA-07-30-2025-1 Safari 18.6

http://seclists.org/fulldisclosure/2025/Aug/0
generic🔴 Active Exploitation

Chromium

https://issues.chromium.org/issues/427162086
generic🔴 Active Exploitation

Chrome Releases: Stable Channel Update for Desktop

https://chromereleases.googleblog.com/2025/07/stable-channel-update-for-desktop_15.html

Patch Availability(11)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuwebkitgtk-webdriver (2.48.5-0ubuntu0.25.04.1) @ plucky2026-08-05ubuntu
redhatwebkitgtk4-0:2.48.5-1.el7_92025-09-15redhat
redhatwebkit2gtk3-0:2.48.5-1.el8_62025-08-25redhat
redhatwebkit2gtk3-0:2.48.5-1.el8_22025-08-25redhat
redhatwebkit2gtk3-0:2.48.5-1.el8_42025-08-25redhat
redhatwebkit2gtk3-0:2.48.5-1.el8_82025-08-25redhat
redhatwebkit2gtk3-0:2.48.5-1.el9_42025-08-25redhat
redhatwebkit2gtk3-0:2.48.5-1.el9_02025-08-25redhat
redhatwebkit2gtk3-0:2.48.5-1.el9_22025-08-25redhat
redhatwebkit2gtk3-0:2.48.5-1.el8_102025-08-13redhat
redhatwebkit2gtk3-0:2.48.5-1.el9_62025-08-13redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(12)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 107× in last 7d / 419× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 998 total refreshes for this CVE.

  1. 2026-08-08 12:34 UTCVendor advisory
  2. 2026-08-08 12:34 UTCGHSA enrichment
  3. 2026-08-08 08:49 UTCVendor advisory
  4. 2026-08-08 08:49 UTCGHSA enrichment
  5. 2026-08-08 05:04 UTCVendor advisory
  6. 2026-08-08 05:04 UTCGHSA enrichment
  7. 2026-08-08 01:20 UTCVendor advisory
  8. 2026-08-08 01:20 UTCGHSA enrichment
  9. 2026-08-07 21:35 UTCVendor advisory
  10. 2026-08-07 21:35 UTCGHSA enrichment
  11. 2026-08-07 17:51 UTCEG score recompute
  12. 2026-08-07 17:51 UTCVendor advisory
  13. 2026-08-07 17:51 UTCGHSA enrichment
  14. 2026-08-07 17:09 UTCCISA KEV update
  15. 2026-08-07 16:27 UTCEPSS rescore
  16. 2026-08-07 14:06 UTCVendor advisory
  17. 2026-08-07 14:06 UTCGHSA enrichment
  18. 2026-08-07 10:21 UTCVendor advisory
  19. 2026-08-07 10:21 UTCGHSA enrichment
  20. 2026-08-07 06:36 UTCVendor advisory
  21. 2026-08-07 06:36 UTCGHSA enrichment
  22. 2026-08-07 02:51 UTCVendor advisory
  23. 2026-08-07 02:51 UTCGHSA enrichment
  24. 2026-08-06 23:06 UTCVendor advisory
  25. 2026-08-06 23:06 UTCGHSA enrichment
Show 75 more
  1. 2026-08-06 19:21 UTCVendor advisory
  2. 2026-08-06 19:21 UTCGHSA enrichment
  3. 2026-08-06 15:37 UTCEG score recompute
  4. 2026-08-06 15:37 UTCVendor advisory
  5. 2026-08-06 15:37 UTCGHSA enrichment
  6. 2026-08-06 13:46 UTCEPSS rescore
  7. 2026-08-06 11:52 UTCVendor advisory
  8. 2026-08-06 11:52 UTCGHSA enrichment
  9. 2026-08-06 08:07 UTCVendor advisory
  10. 2026-08-06 08:07 UTCGHSA enrichment
  11. 2026-08-06 04:23 UTCVendor advisory
  12. 2026-08-06 04:23 UTCGHSA enrichment
  13. 2026-08-06 00:38 UTCVendor advisory
  14. 2026-08-06 00:38 UTCGHSA enrichment
  15. 2026-08-05 20:54 UTCEG score recompute
  16. 2026-08-05 20:54 UTCVendor advisory
  17. 2026-08-05 20:54 UTCGHSA enrichment
  18. 2026-08-05 19:17 UTCEPSS rescore
  19. 2026-08-05 17:25 UTCCISA KEV update
  20. 2026-08-05 17:09 UTCVendor advisory
  21. 2026-08-05 17:09 UTCGHSA enrichment
  22. 2026-08-05 13:25 UTCVendor advisory
  23. 2026-08-05 13:24 UTCGHSA enrichment
  24. 2026-08-05 09:40 UTCVendor advisory
  25. 2026-08-05 09:40 UTCGHSA enrichment
  26. 2026-08-05 05:55 UTCVendor advisory
  27. 2026-08-05 05:54 UTCGHSA enrichment
  28. 2026-08-05 02:07 UTCVendor advisory
  29. 2026-08-05 02:07 UTCGHSA enrichment
  30. 2026-08-04 22:22 UTCVendor advisory
  31. 2026-08-04 22:22 UTCGHSA enrichment
  32. 2026-08-04 18:38 UTCEG score recompute
  33. 2026-08-04 18:38 UTCVendor advisory
  34. 2026-08-04 18:38 UTCGHSA enrichment
  35. 2026-08-04 17:02 UTCCISA KEV update
  36. 2026-08-04 14:53 UTCVendor advisory
  37. 2026-08-04 14:53 UTCGHSA enrichment
  38. 2026-08-04 11:08 UTCEG score recompute
  39. 2026-08-04 11:08 UTCVendor advisory
  40. 2026-08-04 11:07 UTCGHSA enrichment
  41. 2026-08-04 10:37 UTCEPSS rescore
  42. 2026-08-04 07:22 UTCVendor advisory
  43. 2026-08-04 07:21 UTCGHSA enrichment
  44. 2026-08-04 03:35 UTCVendor advisory
  45. 2026-08-04 03:35 UTCGHSA enrichment
  46. 2026-08-03 23:50 UTCVendor advisory
  47. 2026-08-03 23:50 UTCGHSA enrichment
  48. 2026-08-03 20:05 UTCVendor advisory
  49. 2026-08-03 20:05 UTCGHSA enrichment
  50. 2026-08-03 19:22 UTCCISA KEV update
  51. 2026-08-03 16:19 UTCVendor advisory
  52. 2026-08-03 16:19 UTCGHSA enrichment
  53. 2026-08-03 12:33 UTCEG score recompute
  54. 2026-08-03 12:33 UTCVendor advisory
  55. 2026-08-03 12:32 UTCGHSA enrichment
  56. 2026-08-03 10:35 UTCEPSS rescore
  57. 2026-08-03 08:47 UTCVendor advisory
  58. 2026-08-03 08:47 UTCGHSA enrichment
  59. 2026-08-03 05:02 UTCVendor advisory
  60. 2026-08-03 05:02 UTCGHSA enrichment
  61. 2026-08-03 01:18 UTCVendor advisory
  62. 2026-08-03 01:18 UTCGHSA enrichment
  63. 2026-08-02 21:33 UTCVendor advisory
  64. 2026-08-02 21:33 UTCGHSA enrichment
  65. 2026-08-02 17:48 UTCVendor advisory
  66. 2026-08-02 17:48 UTCGHSA enrichment
  67. 2026-08-02 14:04 UTCVendor advisory
  68. 2026-08-02 14:04 UTCGHSA enrichment
  69. 2026-08-02 10:19 UTCVendor advisory
  70. 2026-08-02 10:19 UTCGHSA enrichment
  71. 2026-08-02 06:35 UTCVendor advisory
  72. 2026-08-02 06:35 UTCGHSA enrichment
  73. 2026-08-02 02:50 UTCEG score recompute
  74. 2026-08-02 02:50 UTCVendor advisory
  75. 2026-08-02 02:50 UTCGHSA enrichment

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCDevBuiHieu/CVE-2025-6558-Proof-Of-Concept
    First seen Jul 24, 2025
    Open source ↗

Related CVEs(same vendor + same CWE)

Frequently asked(6)

What is CVE-2025-6558?
CVE-2025-6558 is a critical vulnerability published on July 15, 2025. Insufficient validation of untrusted input in ANGLE and GPU in Google Chrome prior to 138.0.7204.157 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)
When was CVE-2025-6558 disclosed?
CVE-2025-6558 was first published in the National Vulnerability Database on July 15, 2025, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-6558 actively exploited?
Yes. CISA added CVE-2025-6558 to the Known Exploited Vulnerabilities catalog on July 22, 2025, affecting Google Chromium. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2025-6558?
CVE-2025-6558 has a CVSS v3.1 base score of 8.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2025-6558?
CVE-2025-6558 affects Google Chromium. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2025-6558?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-6558, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2025-6558

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