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CVE-2005-3774

INDEX BUILT · 2026-09-20

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Cisco PIX 6.3 and 7.0 allows remote attackers to cause a denial of service (blocked new connections) via spoofed TCP packets that cause the PIX to…

CVE-2005-37743 of 4 sources documented this
22

rank 22 = 5 + 13 + 0 + 4 + 0

rank@v1 · backlog

Someone is already using it

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

EPSS 0.18207  ·  without this subject the record ranks 17

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 5.0, from NVD  ·  without this subject the record ranks 9

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 22

How much of the world it touches

NVD CPE configurations

2 products in the CPE ranges  ·  without this subject the record ranks 18

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 22

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$260,000over the next 30 days, if this record is yours
Movement+$406,000on 2024-12-17, the last material move, 1 year, 5 months before this reading
Basisassumeda published average, not your estate

$260,000 = $4.99M incident cost x 0.28625080150224425 exposure x 0.18207 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

0.18207EPSSNOT IN KEVas of 2026-09-20
Severity5 MEDIUMreceipt
Harmunauthenticated · networkreceipt
Exploitationnone in held sources
Defenseno fix version held
Movementscoring model changedreceipt
RISING10Risen from 0.12567 to 0.18207 across 14 observations. arc-rules@v1

Foresight · where to check next

No weakness class or product neighbourhood is held for this record, so this index cannot name anywhere to check next. That is an absence in the record, not a finding about the software.

Color is a claim, not decoration:the hostile worldthe defenseno signal

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Harm, if it fires from the vector and the weakness

Written for the ticket you're about to file.

Reachnetwork-reachable · no authentication · low attack complexityreceipt
ImpactPartial availability lossreceipt
Scored fromCVSS v2.0 · NVD's vectorreceipt
Weakness classNo CWE mapping in held sources.

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 15 Jun 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.

Exploit Status & Known PoCs a ladder, not a score

Current rung: Nothing observed in held sources.

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

Authority who says so

CVSS, NVD5 MEDIUMreceipt
Exploit probability0.18207 · top 3% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned bymitrereceipt
Recorded changes14 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Named in the CPE rangesCisco pixreceipt
Published rangescisco pix 6.3; cisco pix 7.0receipt

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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What it is stated by the CNA

Cisco PIX 6.3 and 7.0 allows remote attackers to cause a denial of service (blocked new connections) via spoofed TCP packets that cause the PIX to create embryonic connections that that would not produce a valid connection with the end system, including (1) SYN packets with invalid checksums, which do not result in a RST; or, from an external interface, (2) one byte of "meaningless data," or (3) a TTL that is one less than needed to reach the internal destination. receipt

NVD's analysis a second authority

severity
5 AV:N/AC:L/Au:N/C:N/I:N/A:P
affected versions
cisco pix 6.3; cisco pix 7.0

check it yourself securitytracker.com exchange.xforce.ibmcloud.com exchange.xforce.ibmcloud.com osvdb.org securityfocus.com cisco.com +10 morereceipt

Dated events

2023-03-07EPSS moved 0.13 to 0.342025-03-17EPSS moved 0.62 to 0.232026-06-15EPSS moved 0.35 to 0.18

Movement the material steps

4 Feb 20220.12567
7 Mar 20230.34468 · scoring model v2023.03.01
17 Dec 20240.62352 · crossed 0.50
17 Mar 20250.23293 · crossed 0.50 · scoring model v2025.03.14
29 Mar 20250.35367
15 Jun 20260.18207 · scoring model v2026.06.15
Show all 14 observations
4 Feb 20220.12567
7 Mar 20230.34468
4 Jun 20230.39829
13 Oct 20230.43116
14 Mar 20240.40233
30 Oct 20240.33929
17 Dec 20240.62352
17 Mar 20250.23293
19 Mar 20250.22368
23 Mar 20250.29085
29 Mar 20250.35367
30 Mar 20250.29085
5 Apr 20250.35143
15 Jun 20260.18207

14 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 0.18207Published2005-11-23Index as of2026-06-15

The record had been public for 20 years, 6 months when this index was last written.

Published 2005-11-23 receipt · Index as of 2026-06-15 derived

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