vciy

CVE-2019-15892

INDEX BUILT · 2026-09-20

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An issue was discovered in Varnish Cache before 6.0.4 LTS, and 6.1.x and 6.2.x before 6.2.1

CVE-2019-158923 of 4 sources documented this
25

rank 25 = 1 + 19 + 0 + 5 + 0

rank@v1 · scheduled

Someone is already using it

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

EPSS 0.05789  ·  without this subject the record ranks 24

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 7.5, from NVD  ·  without this subject the record ranks 6

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 25

How much of the world it touches

NVD CPE configurations

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

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 25

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$177,000over the next 30 days, if this record is yours
Movement-$231,000on 2025-11-21, the last material move, 9 months before this reading
Basisassumeda published average, not your estate

$177,000 = $4.99M incident cost x 0.6121449559255632 exposure x 0.05789 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

0.05789EPSSNOT IN KEVas of 2026-09-20
Severity7.5 HIGHreceipt
Harmunauthenticated · networkreceipt
Exploitationnone in held sources
Defenseunaffected versions publishedreceipt
Movementrisenreceipt
PLATEAU10Minimal movement since 2022-04-01, 1619 days at 0.06, as of 2026-09-06. 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 privileges required · no user interaction · low attack complexityreceipt
ImpactComplete availability lossreceipt
Scored fromCVSS v3.0 · NVD's vectorreceipt
Weakness classCWE-617 Reachable Assertionreceipt
Published consequencesCWE-617: Availability: DoS: Crash, Exit, or Restart[email protected]

CISA KEV & Federal Remediation Deadline from the record and CISA

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

First unaffected version, by branchvarnish cache 6.0.4; cache project varnish cache 6.2.1receipt
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, NVD7.5 HIGHreceipt
Exploit probability0.05789 · top 7% of all CVEsreceipt
Blast breadth3 products across 3 vendorsderived
Assigned bymitrereceipt
Recorded changes24 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Named in the CPE rangesVarnish-software varnish cache; Varnish cache project varnish cache; Debian linuxreceipt
Published rangesvarnish-software varnish cache >= 6.0.0 < 6.0.4; varnish cache project varnish cache >= 6.1.0 <= 6.1.1; varnish cache project varnish cache >= 6.2.0 < 6.2.1; debian linux 10.0receipt

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

An issue was discovered in Varnish Cache before 6.0.4 LTS, and 6.1.x and 6.2.x before 6.2.1. An HTTP/1 parsing failure allows a remote attacker to trigger an assert by sending crafted HTTP/1 requests. The assert will cause an automatic restart with a clean cache, which makes it a Denial of Service attack. receipt

NVD's analysis a second authority

severity
7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
weakness
CWE-617
affected versions
varnish-software varnish cache >= 6.0.0 < 6.0.4; varnish cache project varnish cache >= 6.1.0 <= 6.1.1; varnish cache project varnish cache >= 6.2.0 < 6.2.1; and 1 more, listed in full below

check it yourself varnish-cache.org seclists.org debian.org lists.opensuse.org lists.fedoraproject.org lists.opensuse.org +2 morereceipt

Dated events

2022-01-06EPSS moved 0.03 to 0.122022-04-01EPSS moved 0.27 to 0.012025-11-21EPSS moved 0.13 to 0.06

Movement the material steps

14 Apr 20210.02895
6 Jan 20220.11799 · crossed 0.10
4 Feb 20220.27206
1 Apr 20220.01408 · crossed 0.10
7 Mar 20230.02453 · scoring model v2023.03.01
17 Mar 20250.04673 · scoring model v2025.03.14
29 Mar 20250.15637 · crossed 0.10
30 Mar 20250.05554 · crossed 0.10
18 Nov 20250.13119 · crossed 0.10
21 Nov 20250.05554 · crossed 0.10
15 Jun 20260.059 · scoring model v2026.06.15
6 Sep 20260.05789
Show all 24 observations
14 Apr 20210.02895
6 Jan 20220.11799
4 Feb 20220.27206
1 Apr 20220.01408
7 Mar 20230.02453
23 Jun 20230.02913
25 Jul 20230.03916
27 Aug 20240.04237
17 Dec 20240.03699
24 Jan 20250.04692
17 Mar 20250.04673
19 Mar 20250.05554
29 Mar 20250.15637
30 Mar 20250.05554
18 Nov 20250.13119
21 Nov 20250.05554
29 May 20260.07699
15 Jun 20260.059
23 Jun 20260.05742
7 Jul 20260.05789
23 Aug 20260.05319
30 Aug 20260.05789
5 Sep 20260.05319
6 Sep 20260.05789

24 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 0.05789Published2019-09-03Index as of2026-09-06

The record had been public for 7 years when this index was last written.

Published 2019-09-03 receipt · Index as of 2026-09-06 derived

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