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CVE-2005-1794

INDEX BUILT · 2026-09-20

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Microsoft Terminal Server using Remote Desktop Protocol (RDP) 5.2 stores an RSA private key in mstlsapi.dll and uses it to sign a certificate, which…

CVE-2005-17943 of 4 sources documented this
37

rank 37 = 17 + 16 + 0 + 4 + 0

rank@v1 · scheduled

Someone is already using it

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

EPSS 0.16319  ·  without this subject the record ranks 20

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 6.4, from NVD  ·  without this subject the record ranks 21

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 37

How much of the world it touches

NVD CPE configurations

2 products in the CPE ranges  ·  without this subject the record ranks 33

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 37

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$402,000over the next 30 days, if this record is yours
Movement-$135,000on 2026-05-22, the last material move, 1 month before this reading
Basisassumeda published average, not your estate

$402,000 = $4.99M incident cost x 0.49378263259137123 exposure x 0.16319 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

0.16319EPSSNOT IN KEVas of 2026-09-20
Severity6.4 MEDIUMreceipt
Harmunauthenticated · networkreceipt
Exploitationpublic proof-of-conceptreceipt
Defenseno fix version held
Movementdoubled within 72hreceipt
PLATEAU10Minimal movement since 2026-06-15, 31 days at 0.16, as of 2026-07-16. 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 confidentiality and integrity 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 16 Jul 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: Proof-of-concept published · 1 public repository, 2022-04-12.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published · 1 public repository2022-04-12receipt
  • RUNG 3Exploited in the wild · CISA KEV listed
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, NVD6.4 MEDIUMreceipt
Exploit probability0.16319 · top 3% of all CVEsreceipt
Blast breadth2 products across 1 vendorderived
Assigned bymitrereceipt
Recorded changes24 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Named in the CPE rangesMicrosoft remote desktop connection; Microsoft windows terminal services using rdpreceipt
Published rangesmicrosoft remote desktop connection 5.1.2600.2180; microsoft windows terminal services using rdp 5.2receipt

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

Microsoft Terminal Server using Remote Desktop Protocol (RDP) 5.2 stores an RSA private key in mstlsapi.dll and uses it to sign a certificate, which allows remote attackers to spoof public keys of legitimate servers and conduct man-in-the-middle attacks. receipt

NVD's analysis a second authority

severity
6.4 AV:N/AC:L/Au:N/C:P/I:P/A:N
affected versions
microsoft remote desktop connection 5.1.2600.2180; microsoft windows terminal services using rdp 5.2
also scored by
7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

check it yourself secunia.com oxid.it securityfocus.com ics-cert.us-cert.gov oval.cisecurity.org receipt

Dated events

2022-04-13EPSS moved 0.13 to 0.182023-03-07EPSS moved 0.18 to 0.012026-06-15EPSS moved 0.06 to 0.16

Movement the material steps

4 Feb 20220.13105
7 Mar 20230.00997 · crossed 0.10 · scoring model v2023.03.01
17 Mar 20250.07526 · scoring model v2025.03.14
28 Mar 20250.11912 · crossed 0.10
29 Mar 20250.04269 · crossed 0.10
30 Mar 20250.11912 · crossed 0.10
30 Jun 20250.09694 · crossed 0.10
8 Feb 20260.11459 · crossed 0.10
22 May 20260.0597 · crossed 0.10
15 Jun 20260.16191 · crossed 0.10 · scoring model v2026.06.15
16 Jul 20260.16319

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

Show all 21 observations
4 Feb 20220.13105
13 Apr 20220.1825
7 Mar 20230.00997
21 Sep 20230.01760
8 May 20240.01270
7 Dec 20240.00637
17 Dec 20240.00525
17 Mar 20250.07526
19 Mar 20250.04269
20 Mar 20250.07526
27 Mar 20250.04269
28 Mar 20250.11912
29 Mar 20250.04269
30 Mar 20250.11912
30 Jun 20250.09694
8 Feb 20260.11459
22 May 20260.0597
23 May 20260.05937
25 May 20260.0597
15 Jun 20260.16191
16 Jul 20260.16319

21 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 0.16319Published2005-06-01Public PoC2022-04-12Index as of2026-07-16

Exploit probability more than doubled between 2025-03-27 and 2025-03-28 (0.04269 → 0.11912) and the record had been public for 21 years, 1 month when this index was last written.

Published 2005-06-01 receipt · Public PoC 2022-04-12 receipt · Index as of 2026-07-16 derived

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