vciy

CVE-2022-2795

INDEX BUILT · 2026-09-20

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Processing large delegations may severely degrade resolver performance

CVE-2022-27954 of 4 sources documented this
24

rank 24 = 1 + 13 + 0 + 10 + 0

rank@v1 · backlog

Someone is already using it

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

EPSS 0.02195  ·  without this subject the record ranks 23

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 5.3, from NVD  ·  without this subject the record ranks 11

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 24

How much of the world it touches

NVD CPE configurations

20 products in the CPE ranges  ·  without this subject the record ranks 14

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 24

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$26,300over 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

$26,300 = $4.99M incident cost x 0.24048551839932833 exposure x 0.02195 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

0.02195EPSSNOT IN KEVas of 2026-09-20
Severity5.3 MEDIUMreceipt
Harmunauthenticated · networkreceipt
Exploitationnone in held sources
Defenseunaffected versions publishedreceipt
Movementrisenreceipt
PLATEAU10Minimal movement since 2022-09-22, 1457 days at 0.02, as of 2026-09-18. 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

Running ISC BIND9? Check your version

A deterministic range check against the ranges this record publishes. It tells you where a version sits in the record, not whether your deployment is exploitable. No account needed.

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What counts as a move

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Record your call

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AcceptDeferPatch by…Not affectedMitigated

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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 privileges required · no user interaction · low attack complexityreceipt
ImpactPartial availability lossreceipt
Scored fromCVSS v3.1 · the CNA'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.

First unaffected version, by branchbind 9.16.33; bind 9.18.7; bind 9.19.5receipt
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, the CNA5.3 MEDIUMreceipt
CVSS, NVD5.3 MEDIUMreceipt
Exploit probability0.02195 · top 18% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned byiscreceipt
Recorded changes60 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productISC BIND9receipt
Published rangesisc bind >= 9.0.0 < 9.16.33; isc bind >= 9.18.0 < 9.18.7; isc bind >= 9.19.0 < 9.19.5; isc bind 9.9.3receipt
Show all 20 published ranges
isc bind >= 9.0.0 < 9.16.33
isc bind >= 9.18.0 < 9.18.7
isc bind >= 9.19.0 < 9.19.5
isc bind 9.9.3
isc bind 9.9.12
isc bind 9.9.13
isc bind 9.10.5
isc bind 9.10.7
isc bind 9.11.3
isc bind 9.11.5
isc bind 9.11.6
isc bind 9.11.7
isc bind 9.11.8
isc bind 9.11.12
isc bind 9.11.14-s1
isc bind 9.11.19-s1
isc bind 9.11.21
isc bind 9.11.27
isc bind 9.11.29
isc bind 9.11.35

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

By flooding the target resolver with queries exploiting this flaw an attacker can significantly impair the resolver's performance, effectively denying legitimate clients access to the DNS resolution service. receipt

NVD's analysis a second authority

severity
5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
affected versions
isc bind >= 9.0.0 < 9.16.33; isc bind >= 9.18.0 < 9.18.7; isc bind >= 9.19.0 < 9.19.5; and 17 more, listed in full below
also scored by
[email protected] 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

check it yourself kb.isc.org openwall.com debian.org lists.fedoraproject.org lists.fedoraproject.org lists.fedoraproject.org +2 morereceipt

Dated events

2025-11-18EPSS moved 0.01 to 0.082025-11-21EPSS moved 0.08 to 0.01

Movement the material steps

22 Sep 20220.00885
7 Mar 20230.0011 · scoring model v2023.03.01
17 Mar 20250.00403 · scoring model v2025.03.14
15 Jun 20260.01429 · scoring model v2026.06.15
18 Sep 20260.02195
Show all 60 observations
22 Sep 20220.00885
23 Sep 20220.0089
24 Sep 20220.00954
25 Sep 20220.01626
1 Oct 20220.01769
31 Oct 20220.02596
7 Mar 20230.0011
8 Mar 20230.00110
16 May 20230.00102
18 Jul 20230.00206
28 Sep 20230.00805
24 Oct 20230.00956
8 Nov 20230.00145
27 Dec 20230.00161
3 Mar 20240.00191
13 Apr 20240.00186
17 Dec 20240.00248
22 Jan 20250.00352
17 Mar 20250.00403
29 Mar 20250.0226
30 Mar 20250.00414
9 Apr 20250.00306
13 May 20250.00403
15 Jun 20250.00414
17 Jun 20250.00306
18 Jul 20250.00285
21 Jul 20250.00375
22 Sep 20250.00363
1 Oct 20250.00493
9 Oct 20250.00572
23 Oct 20250.00527
27 Oct 20250.00388
28 Oct 20250.00527
11 Nov 20250.00614
18 Nov 20250.07519
21 Nov 20250.00614
1 Dec 20250.00527
27 Dec 20250.00388
28 Dec 20250.00527
18 Jan 20260.00542
22 Jan 20260.00577
30 Jan 20260.00426
9 Feb 20260.00401
21 Feb 20260.00345
26 Feb 20260.00412
28 Feb 20260.00467
5 Mar 20260.00507
11 Mar 20260.00493
14 Apr 20260.00649
27 Apr 20260.00864
2 May 20260.00743
7 May 20260.00888
13 May 20260.00655
20 May 20260.00484
7 Jun 20260.00363
15 Jun 20260.01429
2 Jul 20260.01495
22 Jul 20260.01723
28 Aug 20260.01757
18 Sep 20260.02195

60 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 0.02195Published2022-09-21Index as of2026-09-18

The record had been public for 3 years, 11 months when this index was last written.

Published 2022-09-21 receipt · Index as of 2026-09-18 derived

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