CVE-2023-53153

HIGHNVD 7.87.8
EchelonGraph scoreMEDIUM confidence

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

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-09-15. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 3 sources updated this week
7.8EG
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: 0.2%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

wifi: cfg80211: Fix use after free for wext

Key information in wext.connect is not reset on (re)connect and can hold data from a previous connection.

Reset key data to avoid that drivers or mac80211 incorrectly detect a WEP connection request and access the freed or already reused memory.

Additionally optimize cfg80211_sme_connect() and avoid an useless schedule of conn_work.

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
35
EG Risk 35/100

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)
Severity78% × 45%
Impact severity (EG Severity): CVSS 7.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's BOD 26-04 default: no one has published Automatable for this CVE, and CISA treats it as “no” for a CVE not in KEV.
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from 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
0.2%
EPSS %ILE
5th
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 (7.8): severity, escalated by confirmed exploitation. This CVE's 7.8 is its impact severity (EG Severity), not escalated.

EG Severity
7.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-20). 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: 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 (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from 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.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” 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

September 15, 2025

Last Modified

November 24, 2025

Advisory Details (8)

Auto-updated Oct 18, 2026
Patch available.
Web page

wifi: cfg80211: Fix use after free for wext - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/fd081afd21eb35b968b0330700c43ec94986e1c4
Web page

wifi: cfg80211: Fix use after free for wext - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f4b6a138efb8a32507b8946104e32cb926308da7
Web page

wifi: cfg80211: Fix use after free for wext - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a2a92b3e9d8e03ee3f9ee407fc46a9b4bd02d8b6
Web page

wifi: cfg80211: Fix use after free for wext - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6f1959c17d4cb5b74af6fc31dc787e1dc3e4f6e2
Web page

wifi: cfg80211: Fix use after free for wext - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/66af4a2ab1d65d556d638cb9555a3b823c2557a9
Web page

wifi: cfg80211: Fix use after free for wext - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2cfe78619b0de6d2da773978bc2d22797212eaa7
Web page

wifi: cfg80211: Fix use after free for wext - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/22dfb21bf1cd876616d45cda1bc6daa89eec6747
Web page

wifi: cfg80211: Fix use after free for wext - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/015b8cc5e7c4d7bb671f1984d7b7338c310b185b

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
linuxKernel @ 4.14.308 (fixes >=2.6.32)—osv

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

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
linux5.10.103-1 ... 5.10.92-2 (25 versions)
  • every version up to 5.10.178-1: fixed in 5.10.178-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 6.1.20-1: fixed in 6.1.20-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 6.1.20-1: fixed in 6.1.20-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 6.1.20-1: fixed in 6.1.20-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× 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 91 of 177 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. 9 repeat rows among the latest 100 are merged into the row they repeat. The 86 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-23 16:29 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  2. 2026-10-21 16:29 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  3. 2026-10-20 21:16 UTCEG score recompute
  4. 2026-10-20 21:16 UTCGHSA enrichmentGHSA-mmx3-2qhv-f4x6 · GitHub severity HIGH · GitHub CVSS 7.8
  5. 2026-10-20 16:30 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  6. 2026-10-19 16:29 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  7. 2026-10-18 16:29 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  8. 2026-10-18 07:41 UTCEG score recompute
  9. 2026-10-17 16:30 UTCEPSS rescoreEPSS 0.2% · 5th percentile
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  14. 2026-10-12 18:12 UTCEG score recompute
  15. 2026-10-12 16:31 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  16. 2026-10-11 21:38 UTCEG score recompute
  17. 2026-10-11 13:45 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  18. 2026-10-10 19:58 UTCEPSS rescoreEPSS 0.2% · 5th percentile
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  24. 2026-10-04 23:20 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  25. 2026-10-03 14:23 UTCEPSS rescoreEPSS 0.2% · 4th percentile
Show 66 more
  1. 2026-10-02 05:10 UTCOSV refresh
  2. 2026-10-01 19:48 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  3. 2026-09-30 16:37 UTCEG score recompute
  4. 2026-09-30 15:01 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  5. 2026-09-29 15:17 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  6. 2026-09-28 13:49 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  7. 2026-09-26 00:22 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  8. 2026-09-24 14:01 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  9. 2026-09-23 13:46 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  10. 2026-09-20 20:14 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  11. 2026-09-18 19:26 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  12. 2026-09-16 14:06 UTCEPSS rescoreEPSS 0.2% · 5th percentile
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  14. 2026-09-15 03:08 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  15. 2026-09-13 16:45 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  16. 2026-09-13 00:36 UTCOSV refresh
  17. 2026-09-12 14:58 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  18. 2026-09-11 14:51 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  19. 2026-09-11 09:34 UTCEPSS rescoreEPSS 0.2% · 5th percentile
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  23. 2026-09-05 15:26 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  24. 2026-09-04 13:58 UTCEPSS rescoreEPSS 0.2% · 5th percentile
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  26. 2026-09-02 14:10 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  27. 2026-09-01 13:52 UTCEPSS rescoreEPSS 0.2% · 5th percentile
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  29. 2026-08-30 19:15 UTCEPSS rescoreEPSS 0.2% · 5th percentile
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  31. 2026-08-28 21:39 UTCEPSS rescoreEPSS 0.2% · 5th percentile
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  34. 2026-08-25 13:47 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  35. 2026-08-25 03:56 UTCOSV refresh
  36. 2026-08-23 00:17 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  37. 2026-08-21 23:47 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  38. 2026-08-20 22:53 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  39. 2026-08-19 17:02 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  40. 2026-08-18 13:46 UTCEPSS rescoreEPSS 0.2% · 5th percentile
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  42. 2026-08-16 02:12 UTCEPSS rescoreEPSS 0.1% · 4th percentile
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  47. 2026-08-10 23:58 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  48. 2026-08-09 13:44 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  49. 2026-08-08 21:19 UTCOSV refresh
  50. 2026-08-07 16:25 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  51. 2026-08-06 13:45 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  52. 2026-08-05 19:15 UTCEPSS rescoreEPSS 0.1% · 4th percentile
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  63. 2026-07-23 20:11 UTCOSV refresh
  64. 2026-07-23 14:16 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  65. 2026-07-23 02:29 UTCEG score recompute
  66. 2026-07-22 23:16 UTCEG score recompute

Frequently asked(5)

What is CVE-2023-53153?
CVE-2023-53153 is a high-severity vulnerability; its CVE record was published on September 15, 2025. In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: Fix use after free for wext Key information in wext.connect is not reset on (re)connect and can hold data from a previous connection. Reset key data to avoid that drivers or mac80211 incorrectly detect a WEP…
When was the CVE record for CVE-2023-53153 published?
The CVE record for CVE-2023-53153 was published on September 15, 2025. 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 24, 2025; the record at its source may have been updated since.
Is CVE-2023-53153 actively exploited?
CVE-2023-53153 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (5th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2023-53153?
CVE-2023-53153 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2023-53153?
A fix for CVE-2023-53153 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

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