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CVE-2024-20359

INDEX BUILT · 2026-09-20

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A vulnerability in a legacy capability that allowed for the preloading of VPN clients and plug-ins and that has been available in Cisco Adaptive…

CVE-2024-203594 of 4 sources documented this
71

rank 71 = 40 + 15 + 0 + 10 + 6

rank@v1 · act now

Someone is already using it

CISA KEV catalog · public proof-of-concept · FIRST EPSS

EPSS 0.19434 · CISA KEV listed  ·  without this subject the record ranks 31

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 6.0, from NVD  ·  without this subject the record ranks 56

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

no persisting rise in 365 days  ·  without this subject the record ranks 71

How much of the world it touches

NVD CPE configurations

20 products in the CPE ranges  ·  without this subject the record ranks 61

Someone else already set the date

CISA KEV remediation due date

CISA remediation date held  ·  without this subject the record ranks 65

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$855,000over the next 30 days, if this record is yours
Movementno material movementthe record holds only daily drift and scoring model releases
Basisassumeda published average, not your estate

$855,000 = $4.99M incident cost x 0.8814887365328109 exposure x 0.19434 likelihood

udv@v1 · unaudited · wrong for you until you say what you run

$4.99M is the cost of a breach that happened, from IBM Cost of a Data Breach Report 2026, global average. It is not the value of any asset of yours. That average already covers breaches of every severity, so scaling it by exposure understates a partial-impact record. That is an assumption, not a measurement. Your own asset value goes in the decision record.

Hindsight · the state

0.19434EPSSKEV · LISTED
Severity6 MEDIUMreceipt
Harmpartial impactreceipt
Exploitationin the wild · KEVreceipt
Defenseno fix version held
Movementdoubled within 72hreceipt
PLATEAU10Minimal movement since 2026-06-15, 81 days at 0.19, as of 2026-09-04. arc-rules@v1

Foresight · where to check next

CVE-2022-41223SonicWall SMA1000MicrosoftCisco Unifiedlangflow-ai20359

This record is one instance of CWE-94, improper control of generation of code ('code injection'). The index holds 7184 prior instances of this class, 78 KEV-listed. The nearest of its KEV-listed records are drawn beside this. taxonomy@v1

Full pattern panel

Prior records in this weakness class. Each is its own record, dated and receipted.
Color is a claim, not decoration:the hostile worldthe defenseno signalspoke length is how much of the record matches, not how bad it is

Running Cisco Adaptive Security Appliance (ASA)…? Check your version

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Harm, if it fires from the vector and the weakness

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Reachneeds local access · high privileges required · no user interaction · low attack complexityreceipt
ImpactComplete confidentiality and integrity lossreceipt
Scored fromCVSS v3.1 · the CNA's vectorreceipt
Weakness classCWE-94 Improper Control of Generation of Code ('Code Injection')receipt
Published consequencesCWE-94: Access Control: Bypass Protection Mechanism; Access Control: Gain Privileges or Assume Identity; Integrity, Confidentiality, Availability: Execute Unauthorized Code or Commands…[email protected]
Ransomware campaign useUnknown to CISAreceipt

CISA KEV & Federal Remediation Deadline from the record and CISA

The fix, and how long it's been waiting.

Fixed inNo fix version in held sources, as the index stood on 4 Sep 2026.
Patch available sinceNo dated patch-availability record in held sources. The index holds reference URLs without dates and only the current revision of the CVE record, so the day a fix first existed cannot be derived. Only the versions it landed in.
CISA remediation statusoverdue since 2024-05-01receipt
CISA required actionApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.receipt
Published to CISA KEVsame dayderived

Exploit Status & Known PoCs a ladder, not a score

Current rung: Exploited in the wild · CISA KEV listed, 2024-04-24.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published
  • RUNG 3Exploited in the wild · CISA KEV listed2024-04-24receipt
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, the CNA6 MEDIUMreceipt
CVSS, NVD6 MEDIUMreceipt
Exploit probability0.19434 · top 3% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned byciscoreceipt
Recorded changes70 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productCisco Adaptive Security Appliance (ASA) Software; Cisco Firepower Threat Defense Softwarereceipt
Published rangescisco adaptive security appliance software 9.8.1; cisco adaptive security appliance software 9.8.1.5; cisco adaptive security appliance software 9.8.1.7; cisco adaptive security appliance software 9.8.2receipt
Show all 20 published ranges
cisco adaptive security appliance software 9.8.1
cisco adaptive security appliance software 9.8.1.5
cisco adaptive security appliance software 9.8.1.7
cisco adaptive security appliance software 9.8.2
cisco adaptive security appliance software 9.8.2.8
cisco adaptive security appliance software 9.8.2.14
cisco adaptive security appliance software 9.8.2.15
cisco adaptive security appliance software 9.8.2.17
cisco adaptive security appliance software 9.8.2.20
cisco adaptive security appliance software 9.8.2.24
cisco adaptive security appliance software 9.8.2.26
cisco adaptive security appliance software 9.8.2.28
cisco adaptive security appliance software 9.8.2.33
cisco adaptive security appliance software 9.8.2.35
cisco adaptive security appliance software 9.8.2.38
cisco adaptive security appliance software 9.8.3
cisco adaptive security appliance software 9.8.3.8
cisco adaptive security appliance software 9.8.3.11
cisco adaptive security appliance software 9.8.3.14
cisco adaptive security appliance software 9.8.3.16

A rung lights from a row in the index, never from an assessment. "Held sources" is the true scope of the claim: this index reads the CVE record, NVD, CISA KEV, FIRST's EPSS and public proof-of-concept repositories, and it does not observe attacks.

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Attack path

Local accessrequires high privilegesCISA KEV listingadded 04-24 · due 05-01Cisco Firepower Threat Defense Soft…CWE-94 code injectionConfidentiality and integrity lossC:H / I:Hmandates remediationexploits CWE-94data compromise

What it is stated by the CNA

A vulnerability in a legacy capability that allowed for the preloading of VPN clients and plug-ins and that has been available in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, local attacker to execute arbitrary code with root-level privileges. Administrator-level privileges are required to exploit this vulnerability. This vulnerability is due to improper validation of a file when it is read from system flash memory. An attacker could exploit this vulnerability by copying a crafted file to the disk0: file system of an affected device. receipt

Read the rest of the CNA's description

A successful exploit could allow the attacker to execute arbitrary code on the affected device after the next reload of the device, which could alter system behavior. Because the injected code could persist across device reboots, Cisco has raised the Security Impact Rating (SIR) of this advisory from Medium to High.

NVD's analysis a second authority

severity
6 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
weakness
CWE-94
affected versions
cisco adaptive security appliance software 9.8.1; cisco adaptive security appliance software 9.8.1.5; cisco adaptive security appliance software 9.8.1.7; and 17 more, listed in full below
also scored by
[email protected] 6 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

check it yourself sec.cloudapps.cisco.com receipt

Dated events

2024-04-24Added to CISA KEV2024-05-01CISA remediation due2026-06-15EPSS moved 0.00 to 0.17

Movement the material steps

25 Apr 20240.01179
17 Mar 20250.00269 · scoring model v2025.03.14
15 Jun 20260.16863 · crossed 0.10 · scoring model v2026.06.15
7 Jul 20260.19434

This score more than doubled inside 72 hours. Both observations are in the full history below.

Show all 59 observations
25 Apr 20240.01179
27 Apr 20240.00128
5 May 20240.00324
15 May 20240.00128
1 Mar 20250.00108
17 Mar 20250.00269
19 Mar 20250.00977
20 Mar 20250.00269
27 Mar 20250.00977
28 Mar 20250.00269
29 Mar 20250.00977
30 Mar 20250.00269
15 Apr 20250.00028
18 Apr 20250.00026
15 May 20250.0008
21 May 20250.00066
2 Jun 20250.00137
3 Jun 20250.00087
9 Jun 20250.00083
17 Jun 20250.00105
21 Jun 20250.00108
4 Jul 20250.00105
31 Jul 20250.00141
13 Aug 20250.00183
17 Aug 20250.00192
20 Aug 20250.00142
22 Aug 20250.00153
19 Sep 20250.00104
23 Sep 20250.00131
25 Sep 20250.00122
8 Oct 20250.00166
17 Oct 20250.0012
18 Oct 20250.00126
19 Oct 20250.00138
20 Oct 20250.00129
22 Oct 20250.00133
29 Oct 20250.00174
18 Nov 20250.00302
21 Nov 20250.00193
22 Nov 20250.00164
23 Nov 20250.00175
28 Nov 20250.00164
1 Dec 20250.00171
4 Dec 20250.00181
5 Dec 20250.00177
18 Dec 20250.00181
1 Jan 20260.00177
3 Jan 20260.00188
7 Jan 20260.00179
4 Feb 20260.0022
8 Apr 20260.00247
11 Apr 20260.002
12 Apr 20260.00159
22 May 20260.00129
26 May 20260.00133
8 Jun 20260.00138
15 Jun 20260.16863
21 Jun 20260.16995
7 Jul 20260.19434

59 observations held. A highlighted step crossed a promotion threshold. A step marked with a scoring model moved because the instrument was replaced, not because the vulnerability changed. receipt

The full biography

EPSS 0.19434Published · CISA KEV2024-04-24Index as of2026-09-04

Listed by CISA on the day it published, exploit probability more than doubled between 2025-03-17 and 2025-03-19 (0.00269 → 0.00977) and the record had been public for 2 years, 4 months when this index was last written.

No material movement in 59 days as of the last ingest this index recorded.

Published 2024-04-24 receipt · CISA KEV 2024-04-24 receipt · Index as of 2026-09-04 derived

The pattern, elsewhere

This record is one instance of CWE-94, improper control of generation of code ('code injection'). The index holds 7184 prior instances of this class, 78 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]

CVE-2022-41223matches 6 of 8KEV listed · 2022receipt
CVE-2026-15410 · SonicWall SMA1000matches 6 of 9KEV listed · 2026receipt
CVE-2023-24955 · Microsoft SharePoint Enterprise Server 2016matches 6 of 9KEV listed · 2023receipt
CVE-2026-20045 · Cisco Unified Communications Managermatches 6 of 9KEV listed · 2026receipt
CVE-2025-3248 · langflow-ai langflowmatches 5 of 9KEV listed · 2025receipt
CVE-2025-49704 · Microsoft SharePoint Enterprise Server 2016matches 5 of 9KEV listed · 2025receipt

"Matches n of m" counts the attributes the two records can both be compared on: the CVSS metrics they share a version of, any weakness class beyond this one, and the vendor. fit-rules@v1

7184 records in this class held. The six above are drawn from the ones CISA has listed as exploited, ranked by how much of the record matches this one. That is why every one of them is KEV-listed: the pool is, so the colour on those spokes says nothing the pool has not already said.

No curated product neighbourhood is held for this product, so the records above are the nearest this index can name. The neighbourhood table covers a small set of products and is extended by hand.

Siblings and hubs

Records related to this one

Its defect family

cisco adaptive security appliance (asa) software

Of the 3 records in this family that state one, this holds the lowest NVD CVSS score: 6.

Grouped by shared product and weakness, not by shared vulnerability. Each record's own state is on its own page.

Family membership: held values

This record is one of a group, and the group's page describes all of them. This page is kept and dated, and the defect family's own page is the one we offer for indexing: the whole group.

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