CASCACascade Atlas

Evidence dossier

CVE-2013-3660

CVE-2013-3660

69.8–87.1Priority evidence range
As known Jul 21, 2026, 8:13 AM UTCgen-409cbd0c

Normalized restatement

The EPATHOBJ::pprFlattenRec function in win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, and Windows Server 2012 does not properly initialize a pointer for the next object in a certain list, which allows local users to obtain write access to the PATHRECORD chain, and consequently gain privileges, by triggering excessive consumption of paged memory and then making many FlattenPath function calls, aka "Win32k Read AV Vulnerability."

State
PUBLISHED
Published
May 24, 2013
Updated
Oct 22, 2025
Evidence coverage
72%
CISA KEVCatalog member

Apply updates per vendor instructions.

FIRST EPSS39.58%

2026-07-18 · v2026.06.15 · percentile 98.5%

Source stateConflict visible

Distinct CVSS assessments remain side by side; none are averaged.

Source comparison

Who said what

CISA-ADPindependent enrichment
container

CISA ADP Vulnrichment

CVEderivative copy
container

CVE Program Container

mitreoriginal assertion
container

The EPATHOBJ::pprFlattenRec function in win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, and Windows Server 2012 does not properly initialize a pointer for the next object in a certain list, which allows local users to obtain write access to the PATHRECORD chain, and consequently gain privileges, by triggering excessive consumption of paged memory and then making many FlattenPath function calls, aka "Win32k Read AV Vulnerability."

CISA KEVoriginal assertion
observed_exploitation

Microsoft Win32k Privilege Escalation Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.395780000000; percentile 0.984550000000

Applicability

Cited product scope

Trace impact →
10Underlying assertions
8Canonical products
10Target assertions
0Constraint assertions

Grouped from 1 configuration nodes in this exact generation. Visual grouping does not establish asset exposure or common root cause.

Identity source boundaries
  • cpe dictionary1,775,266 records · observed through 2026-07-21T06:45:29.809Z27d65b0f-b718-4b4f-bb79-c47c68d09dfa
  • cpe match643,502 records · observed through 2026-07-21T08:13:17.697Z955dae73-7302-438b-aee1-058d7cc5d48e

9 scope groups

mitre · source assertedn/an/aDirect source scope
[{"status": "affected", "version": "n/a"}]
unknown
NVD CPE · OPERATING SYSTEMmicrosoftwindows_7Vulnerable target · 1 assertions
Version not applicableCanonical identity product-f20a05098a41a238f96b56b817d0482887bb39ad40620198bbe05da10ee02ffclinked exact
supported
Inspect 1 returned assertions
  1. cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:*
    Official link
    linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    c2b1c231-de19-4b8f-a4aa-5b3a65276e46
NVD CPE · OPERATING SYSTEMmicrosoftwindows_8Vulnerable target · 1 assertions
Version not applicableCanonical identity product-5a559e3d4b779565d6fa99223972e75a4cba4d476b27b830a78ab8eb44d5bef2linked exact
supported
Inspect 1 returned assertions
  1. cpe:2.3:o:microsoft:windows_8:-:*:*:*:*:*:*:*
    Official link
    linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 1
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    0d229e41-a971-4284-9657-16d78414b93f
NVD CPE · OPERATING SYSTEMmicrosoftwindows_rtVulnerable target · 1 assertions
Version not applicableCanonical identity product-f2e843a0733f87d1fbdb9ac1bcb919b5de195839b7bcb2713e04543f626be126linked exact
supported
Inspect 1 returned assertions
  1. cpe:2.3:o:microsoft:windows_rt:-:*:*:*:*:*:*:*
    Official link
    linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 2
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    abc7a32c-4a4a-4533-b42e-350e728adfeb
NVD CPE · OPERATING SYSTEMmicrosoftwindows_server_2003Vulnerable target · 1 assertions
Version not applicableCanonical identity product-21c8a455c6651c09ac3fd0874c5219dd6081913f4835e8de22662b3821fec60blinked exact
supported
Inspect 1 returned assertions
  1. cpe:2.3:o:microsoft:windows_server_2003:-:sp2:*:*:*:*:*:*
    Official link
    linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 3
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    1d929aa2-ee0b-4aa1-805d-69bcca11b77f
NVD CPE · OPERATING SYSTEMmicrosoftwindows_server_2008Vulnerable target · 2 assertions
Version not applicable; Version r2Canonical identity product-217b1ab3d25f361a639824f86753d418b35aa2a816ee370bb71b5d1dd883d87alinked exact
supported
Inspect 2 returned assertions
  1. cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*
    Official link
    linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 4
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    5f422a8c-2c4e-42c8-b420-e0728037e15c
  2. cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
    Official link
    linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 5
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    af07a81d-12e5-4b1d-bff9-c8d08c32ff4f
NVD CPE · OPERATING SYSTEMmicrosoftwindows_server_2012Vulnerable target · 1 assertions
Version not applicableCanonical identity product-5a80416e92fed0cddbb3d4f3840218b448dee11159824ad25a0353da566963felinked exact
supported
Inspect 1 returned assertions
  1. cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
    Official link
    linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 6
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    a7df96f8-ba6a-4780-9ca3-f719b3f81074
NVD CPE · OPERATING SYSTEMmicrosoftwindows_vistaVulnerable target · 1 assertions
Version not applicableCanonical identity product-c6332934cac78bf2604a03402cb66568f867ce86c773d4333d1205e477bf93a9linked exact
supported
Inspect 1 returned assertions
  1. cpe:2.3:o:microsoft:windows_vista:-:sp2:*:*:*:*:*:*
    Official link
    linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 7
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    bf1ad1a1-ee20-4bce-9ee6-84b27139811c
NVD CPE · OPERATING SYSTEMmicrosoftwindows_xpVulnerable target · 2 assertions
Version not applicableCanonical identity product-64e458557132a0a0a8bbaccf808d742614fb319511c19c0d45dd39b15a52fcc7linked exact
supported
Inspect 2 returned assertions
  1. cpe:2.3:o:microsoft:windows_xp:-:sp2:*:*:professional:*:x64:*
    Official link
    linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 8
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    c6109348-bc79-4ed3-8d41-ea546a540c79
  2. cpe:2.3:o:microsoft:windows_xp:-:sp3:*:*:*:*:*:*
    Official link
    linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 9
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    c9392d35-7bf5-48e9-879b-bbde9a9e9ab9

Assessments

CVSS by origin

7.8
nvd@nist.govCVSS 3.1 · role PrimaryCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
6.9
nvd@nist.govCVSS 2.0 · role PrimaryAV:L/AC:M/Au:N/C:C/I:C/A:C
7.8
134c704f-9b21-4f2e-91b3-4a467353bcc0CVSS 3.1 · role SecondaryCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.8
CISA-ADPCVSS 3.1 · role unknownCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Limitations and unknowns

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown.
  • NVD-carried upstream facts remain derivative and are not independent corroboration.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Factor D remains unknown because WC-03 has not converted canonical CPE mappings into generation-bound mapping obligations; canonical identity alone does not score applicability.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.