CVE-2025-46299

MEDIUMNVD 4.34.3
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 4.3 from GitHub Security Advisory published 2026-01-10. NVD baseline CVSS 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
4.3EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 4.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A memory initialization issue was addressed with improved memory handling. This issue is fixed in Safari 26.2, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2, tvOS 26.2, visionOS 26.2, watchOS 26.2. Processing maliciously crafted web content may disclose internal states of the app.

CVSS v3
4.3
EG Score
4.3MEDIUMmedium confidence
EG Risk
19
EG Risk 19/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity43% × 45%
Impact severity (EG Severity): CVSS 4.3 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.3% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.3%
EPSS %ILE
21st
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (4.3): severity, escalated by confirmed exploitation. This CVE's 4.3 is its impact severity (EG Severity), not escalated.

EG Severity
4.3 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.3% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-17). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

January 9, 2026

Last Modified

June 17, 2026

Advisory Details (6)

Auto-updated Aug 9, 2026
Patch available.
Web page

About the security content of Safari 26.2 - Apple Support

https://support.apple.com/en-us/125892
Web page

About the security content of visionOS 26.2 - Apple Support

https://support.apple.com/en-us/125891
Web page

About the security content of watchOS 26.2 - Apple Support

https://support.apple.com/en-us/125890
Web page

About the security content of tvOS 26.2 - Apple Support

https://support.apple.com/en-us/125889
Web page

About the security content of macOS Tahoe 26.2 - Apple Support

https://support.apple.com/en-us/125886
Web page

About the security content of iOS 26.2 and iPadOS 26.2 - Apple Support

https://support.apple.com/en-us/125884

Patch Availability(12)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatwebkitgtk4-0:2.52.3-1.el7_92026-06-01redhat
ubuntuwebkitgtk-webdriver (2.52.3-0ubuntu0.25.10.1) @ questing2026-05-21ubuntu
redhatwebkit2gtk3-0:2.52.3-1.el9_02026-05-20redhat
redhatwebkit2gtk3-0:2.52.3-1.el9_82026-05-19redhat
redhatwebkit2gtk3-0:2.52.3-1.el9_22026-05-13redhat
redhatwebkit2gtk3-0:2.52.3-1.el8_42026-05-11redhat
redhatwebkit2gtk3-0:2.52.3-1.el9_42026-05-07redhat
redhatwebkit2gtk3-0:2.52.3-1.el8_62026-05-05redhat
redhatwebkit2gtk3-0:2.52.3-1.el8_82026-04-29redhat
redhatwebkit2gtk3-0:2.52.3-1.el9_62026-04-28redhat
redhatwebkit2gtk3-0:2.52.3-1.el8_102026-04-27redhat
redhatwebkit2gtk3-0:2.52.3-0.el9_7.12026-04-22redhat

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.

Affected Packages

(8 across 4 ecosystems)
Debian:11(2)
PackageVulnerable rangeFix by version rangeDependents
webkit2gtk2.32.3-1 ... 2.53.4-1 (246 versions)
  • every version on: no fix on record
—
wpewebkit2.32.3-2 ... 2.52.5-1 (90 versions)
  • every version on: no fix on record
—
Debian:12(2)
PackageVulnerable rangeFix by version rangeDependents
webkit2gtk2.40.1-1 ... 2.53.91-1 (165 versions)
  • every version on: no fix on record
—
wpewebkit2.38.6-1 ... 2.52.6-1 (54 versions)
  • every version on: no fix on record
—
Debian:13(2)
PackageVulnerable rangeFix by version rangeDependents
webkit2gtk2.48.3-1 ... 2.52.3-1 (45 versions)
  • every version up to 2.52.3-2~deb13u1: fixed in 2.52.3-2~deb13u1
—
wpewebkit2.48.3-1 ... 2.52.6-1 (20 versions)
  • every version on: no fix on record
—
Debian:14(2)
PackageVulnerable rangeFix by version rangeDependents
webkit2gtk2.48.3-1 ... 2.51.93-1 (40 versions)
  • every version up to 2.52.0-1: fixed in 2.52.0-1
—
wpewebkit2.48.3-1 ... 2.50.6-1 (12 versions)
  • every version up to 2.52.0-1: fixed in 2.52.0-1
—

Weakness Classification(1)

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

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 8× in last 7d / 33× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 95 of 232 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 5 repeat rows among the latest 100 are merged into the row they repeat. The 137 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  2. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  3. 2026-10-18 05:32 UTCEG score recompute
  4. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  5. 2026-10-16 16:38 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  6. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  7. 2026-10-14 16:31 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  8. 2026-10-13 16:32 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  9. 2026-10-12 17:03 UTCEG score recompute
  10. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  11. 2026-10-11 20:36 UTCEG score recompute
  12. 2026-10-11 18:47 UTCEG score recompute
  13. 2026-10-11 15:24 UTCEG score recompute
  14. 2026-10-11 13:47 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  15. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  16. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  17. 2026-10-08 22:55 UTCOSV refresh
  18. 2026-10-08 17:10 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  19. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  20. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  21. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  22. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  23. 2026-10-03 14:24 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  24. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  25. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.3% · 21st percentile
Show 70 more
  1. 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  2. 2026-09-27 13:45 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  3. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  4. 2026-09-26 00:25 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  5. 2026-09-24 14:02 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  6. 2026-09-23 13:47 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  7. 2026-09-21 21:06 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  8. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  9. 2026-09-19 05:30 UTCOSV refresh
  10. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  11. 2026-09-17 19:29 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  12. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  13. 2026-09-15 03:09 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  14. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  15. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  16. 2026-09-11 09:36 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  17. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  18. 2026-09-08 21:59 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  19. 2026-09-07 16:00 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  20. 2026-09-06 13:46 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  21. 2026-09-05 15:28 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  22. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  23. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  24. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  25. 2026-09-01 04:38 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  26. 2026-08-31 08:58 UTCOSV refresh
  27. 2026-08-30 19:16 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  28. 2026-08-30 01:21 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  29. 2026-08-28 21:40 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  30. 2026-08-27 14:24 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  31. 2026-08-26 14:45 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  32. 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  33. 2026-08-24 14:16 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  34. 2026-08-24 09:22 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  35. 2026-08-23 00:18 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  36. 2026-08-21 23:48 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  37. 2026-08-20 22:54 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  38. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  39. 2026-08-18 13:47 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  40. 2026-08-17 13:46 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  41. 2026-08-16 14:55 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  42. 2026-08-16 02:13 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  43. 2026-08-15 01:29 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  44. 2026-08-14 15:12 UTCEG score recompute
  45. 2026-08-14 15:12 UTCVendor advisory
  46. 2026-08-14 15:12 UTCGHSA enrichmentGHSA-29gc-r2qh-wc5v · GitHub CVSS 4.3
  47. 2026-08-13 21:59 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  48. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  49. 2026-08-11 13:41 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  50. 2026-08-10 23:59 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  51. 2026-08-09 20:41 UTCEG score recompute
  52. 2026-08-09 20:41 UTCVendor advisory
  53. 2026-08-09 20:41 UTCGHSA enrichmentGHSA-29gc-r2qh-wc5v · GitHub CVSS 4.3
  54. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  55. 2026-08-08 16:36 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  56. 2026-08-08 01:06 UTCEG score recompute
  57. 2026-08-08 01:06 UTCVendor advisory
  58. 2026-08-08 01:06 UTCGHSA enrichmentGHSA-29gc-r2qh-wc5v · GitHub CVSS 4.3
  59. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  60. 2026-08-06 06:04 UTCEG score recompute
  61. 2026-08-06 06:04 UTCVendor advisory
  62. 2026-08-06 06:04 UTCGHSA enrichmentGHSA-29gc-r2qh-wc5v · GitHub CVSS 4.3
  63. 2026-08-05 19:16 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  64. 2026-08-04 15:09 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  65. 2026-08-04 10:37 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  66. 2026-08-03 10:35 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  67. 2026-08-02 02:26 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  68. 2026-08-01 04:15 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  69. 2026-07-30 16:27 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  70. 2026-07-30 01:30 UTCEPSS rescoreEPSS 0.3% · 18th percentile

Frequently asked(5)

What is CVE-2025-46299?
CVE-2025-46299 is a medium-severity vulnerability; its CVE record was published on January 9, 2026. A memory initialization issue was addressed with improved memory handling. This issue is fixed in Safari 26.2, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2, tvOS 26.2, visionOS 26.2, watchOS 26.2. Processing maliciously crafted web content may disclose internal states of the app.
When was the CVE record for CVE-2025-46299 published?
The CVE record for CVE-2025-46299 was published on January 9, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of June 17, 2026; the record at its source may have been updated since.
Is CVE-2025-46299 actively exploited?
CVE-2025-46299 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (21st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2025-46299?
CVE-2025-46299 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2025-46299?
A fix for CVE-2025-46299 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2025-46299 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-46299

Explore →

Is Your Infrastructure Affected by CVE-2025-46299?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.