CVE-2023-25362

CRITICALNVD 8.89.8
EchelonGraph scoreMEDIUM confidence

“▲” beside the score: it is higher than NVD's CVSS score.

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2023-03-02. NVD baseline CVSS 8.8; sources differ by 1.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 4 sources updated this week

Also known asEUVD-2023-29320 (ENISA EUVD) · GHSA-wjwh-3f92-h6f4 (GitHub Security Advisories)Source: ENISA EUVD

9.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.0%CVSS: 8.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A use-after-free vulnerability in WebCore::RenderLayer::repaintBlockSelectionGaps in WebKitGTK before 2.36.8 allows attackers to execute code remotely.

CVSS v3
8.8
EG Score
9.8CRITICALmedium confidence
EG Risk
44
EG Risk 44/100

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)
Severity98% × 45%
Impact severity (EG Severity): CVSS 9.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation1.0% × 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 low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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
1.0%
EPSS %ILE
62nd
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 (9.8): severity, escalated by confirmed exploitation. This CVE's 9.8 is its impact severity (EG Severity), not escalated.

EG Severity
9.8 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
1.0% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-01). 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 low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

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

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (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

March 2, 2023

Last Modified

November 21, 2024

Advisory Details (3)

Auto-updated Aug 28, 2026
Patch available.
Web page

WebKitGTK+: Multiple Vulnerabilities (GLSA 202305-32) — Gentoo security

https://security.gentoo.org/glsa/202305-32
Web page

244802 – (CVE-2023-25362) heap-use-after-free in WebCore::RenderLayer::repaintBlockSelectionGaps()

https://bugs.webkit.org/show_bug.cgi?id=244802
Web page

oss-security - WebKitGTK and WPE WebKit Security Advisory WSA-2023-0003

http://www.openwall.com/lists/oss-security/2023/04/21/3

Vendor Advisories for CVE-2023-25362(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(2)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatwebkit2gtk3-0:2.38.5-1.el82023-05-16redhat
redhatwebkit2gtk3-0:2.38.5-1.el92023-05-09redhat

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

(9 across 5 ecosystems)
Debian:11(2)
PackageVulnerable rangeFix by version rangeDependents
webkit2gtk2.32.3-1 ... 2.38.0-1~deb10u1 (54 versions)
  • every version up to 2.38.0-1~deb11u1: fixed in 2.38.0-1~deb11u1
—
wpewebkit2.32.3-2 ... 2.36.7-1~deb11u1 (25 versions)
  • every version up to 2.38.0-1~deb11u1: fixed in 2.38.0-1~deb11u1
—
Debian:12(2)
PackageVulnerable rangeFix by version rangeDependents
webkit2gtk—
  • every version up to 2.38.0-1: fixed in 2.38.0-1
—
wpewebkit—
  • every version up to 2.38.0-1: fixed in 2.38.0-1
—
Debian:13(2)
PackageVulnerable rangeFix by version rangeDependents
webkit2gtk—
  • every version up to 2.38.0-1: fixed in 2.38.0-1
—
wpewebkit—
  • every version up to 2.38.0-1: fixed in 2.38.0-1
—
Debian:14(2)
PackageVulnerable rangeFix by version rangeDependents
webkit2gtk—
  • every version up to 2.38.0-1: fixed in 2.38.0-1
—
wpewebkit—
  • every version up to 2.38.0-1: fixed in 2.38.0-1
—
Debian:10(1)
PackageVulnerable rangeFix by version rangeDependents
webkit2gtk2.24.2-1 ... 2.37.91-1 (139 versions)
  • every version up to 2.38.0-1~deb10u1: fixed in 2.38.0-1~deb10u1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 25× in last 7d / 88× 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 100 of 271 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. None are among the latest 100 rows. The 171 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-02 16:39 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  2. 2026-11-01 20:48 UTCEG score recompute
  3. 2026-11-01 20:48 UTCVendor advisory
  4. 2026-11-01 20:48 UTCGHSA enrichmentGHSA-wjwh-3f92-h6f4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  5. 2026-11-01 16:30 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  6. 2026-10-31 18:27 UTCEG score recompute
  7. 2026-10-31 18:27 UTCVendor advisory
  8. 2026-10-31 18:27 UTCGHSA enrichmentGHSA-wjwh-3f92-h6f4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  9. 2026-10-31 16:29 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  10. 2026-10-30 16:31 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  11. 2026-10-30 15:53 UTCEG score recompute
  12. 2026-10-30 15:53 UTCVendor advisory
  13. 2026-10-30 15:53 UTCGHSA enrichmentGHSA-wjwh-3f92-h6f4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  14. 2026-10-29 16:30 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  15. 2026-10-29 13:33 UTCEG score recompute
  16. 2026-10-29 13:33 UTCVendor advisory
  17. 2026-10-29 13:33 UTCGHSA enrichmentGHSA-wjwh-3f92-h6f4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  18. 2026-10-28 16:29 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  19. 2026-10-28 11:12 UTCEG score recompute
  20. 2026-10-28 11:12 UTCVendor advisory
  21. 2026-10-28 11:12 UTCGHSA enrichmentGHSA-wjwh-3f92-h6f4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  22. 2026-10-27 16:29 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  23. 2026-10-27 08:12 UTCEG score recompute
  24. 2026-10-27 08:12 UTCVendor advisory
  25. 2026-10-27 08:11 UTCGHSA enrichmentGHSA-wjwh-3f92-h6f4 · GitHub severity CRITICAL · GitHub CVSS 9.8
Show 75 more
  1. 2026-10-26 16:28 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  2. 2026-10-26 03:34 UTCVendor advisory
  3. 2026-10-26 03:34 UTCGHSA enrichmentGHSA-wjwh-3f92-h6f4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  4. 2026-10-25 17:47 UTCEG score recompute
  5. 2026-10-25 16:29 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  6. 2026-10-25 01:11 UTCEG score recompute
  7. 2026-10-25 01:11 UTCVendor advisory
  8. 2026-10-25 01:11 UTCGHSA enrichmentGHSA-wjwh-3f92-h6f4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  9. 2026-10-24 16:29 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  10. 2026-10-23 22:51 UTCEG score recompute
  11. 2026-10-23 22:51 UTCVendor advisory
  12. 2026-10-23 22:51 UTCGHSA enrichmentGHSA-wjwh-3f92-h6f4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  13. 2026-10-23 16:29 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  14. 2026-10-22 20:25 UTCEG score recompute
  15. 2026-10-22 20:25 UTCVendor advisory
  16. 2026-10-22 20:25 UTCGHSA enrichmentGHSA-wjwh-3f92-h6f4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  17. 2026-10-22 16:30 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  18. 2026-10-21 18:05 UTCEG score recompute
  19. 2026-10-21 18:05 UTCVendor advisory
  20. 2026-10-21 18:05 UTCGHSA enrichmentGHSA-wjwh-3f92-h6f4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  21. 2026-10-21 16:29 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  22. 2026-10-20 16:29 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  23. 2026-10-20 15:42 UTCEG score recompute
  24. 2026-10-20 15:42 UTCVendor advisory
  25. 2026-10-20 15:42 UTCGHSA enrichmentGHSA-wjwh-3f92-h6f4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  26. 2026-10-19 16:29 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  27. 2026-10-19 13:21 UTCEG score recompute
  28. 2026-10-19 13:21 UTCVendor advisory
  29. 2026-10-19 13:21 UTCGHSA enrichmentGHSA-wjwh-3f92-h6f4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  30. 2026-10-18 16:29 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  31. 2026-10-18 11:00 UTCVendor advisory
  32. 2026-10-18 11:00 UTCGHSA enrichmentGHSA-wjwh-3f92-h6f4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  33. 2026-10-18 08:10 UTCEG score recompute
  34. 2026-10-17 16:29 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  35. 2026-10-17 05:52 UTCEG score recompute
  36. 2026-10-17 05:52 UTCVendor advisory
  37. 2026-10-17 05:52 UTCGHSA enrichmentGHSA-wjwh-3f92-h6f4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  38. 2026-10-16 16:35 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  39. 2026-10-16 03:30 UTCEG score recompute
  40. 2026-10-16 03:30 UTCVendor advisory
  41. 2026-10-16 03:29 UTCGHSA enrichmentGHSA-wjwh-3f92-h6f4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  42. 2026-10-15 16:29 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  43. 2026-10-15 00:14 UTCEG score recompute
  44. 2026-10-15 00:14 UTCVendor advisory
  45. 2026-10-15 00:14 UTCGHSA enrichmentGHSA-wjwh-3f92-h6f4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  46. 2026-10-14 16:29 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  47. 2026-10-13 20:12 UTCEG score recompute
  48. 2026-10-13 20:12 UTCVendor advisory
  49. 2026-10-13 20:12 UTCGHSA enrichmentGHSA-wjwh-3f92-h6f4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  50. 2026-10-13 16:29 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  51. 2026-10-12 17:30 UTCEG score recompute
  52. 2026-10-12 17:30 UTCVendor advisory
  53. 2026-10-12 17:29 UTCGHSA enrichmentGHSA-wjwh-3f92-h6f4 · GitHub severity CRITICAL · GitHub CVSS 9.8
  54. 2026-10-12 16:30 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  55. 2026-10-11 21:57 UTCEG score recompute
  56. 2026-10-11 13:45 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  57. 2026-10-10 19:57 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  58. 2026-10-09 20:05 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  59. 2026-10-08 17:05 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  60. 2026-10-07 23:45 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  61. 2026-10-06 15:14 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  62. 2026-10-05 17:40 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  63. 2026-10-04 23:19 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  64. 2026-10-03 14:23 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  65. 2026-10-02 16:23 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  66. 2026-10-01 19:47 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  67. 2026-09-30 16:18 UTCEG score recompute
  68. 2026-09-30 15:01 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  69. 2026-09-29 15:16 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  70. 2026-09-26 15:55 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  71. 2026-09-26 00:22 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  72. 2026-09-24 14:01 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  73. 2026-09-23 19:22 UTCOSV refresh
  74. 2026-09-23 13:45 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  75. 2026-09-22 14:45 UTCEPSS rescoreEPSS 1.0% · 60th percentile

Frequently asked(5)

What is CVE-2023-25362?
CVE-2023-25362 is a critical-severity vulnerability; its CVE record was published on March 2, 2023. A use-after-free vulnerability in WebCore::RenderLayer::repaintBlockSelectionGaps in WebKitGTK before 2.36.8 allows attackers to execute code remotely.
When was the CVE record for CVE-2023-25362 published?
The CVE record for CVE-2023-25362 was published on March 2, 2023. 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 November 21, 2024; the record at its source may have been updated since.
Is CVE-2023-25362 actively exploited?
CVE-2023-25362 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.0% probability of exploitation in the next 30 days (62nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2023-25362?
CVE-2023-25362 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + FIRST EPSS + GHSA into a combined EG score of 9.8 (CRITICAL).
How do I remediate CVE-2023-25362?
A fix for CVE-2023-25362 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2023-25362 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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