CVE-2018-5740
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A flaw in the "deny-answer-aliases" feature can cause an assertion failure in named
rank 55 = 24 + 19 + 2 + 10 + 0
rank@v1 · this cycle
Someone is already using it
CISA KEV catalog · public proof-of-concept · FIRST EPSS
EPSS 0.59620 · without this subject the record ranks 31
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 36
It is getting worse, not staying still
FIRST EPSS series, rescorings and bad loads removed
rose on 2025-11-30 · without this subject the record ranks 53
How much of the world it touches
NVD CPE configurations
20 products in the CPE ranges · without this subject the record ranks 45
Someone else already set the date
CISA KEV remediation due date
no CISA due date · without this subject the record ranks 55
$1.82M = $4.99M incident cost x 0.6121449559255632 exposure x 0.5962 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
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.
Sources disagree here.
Both shown, dated. We don't pick winners. disagreement-rules@v1
Running ISC BIND 9? Check your version
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Harm, if it fires from the vector and the weakness
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CISA KEV & Federal Remediation Deadline from the record and CISA
The fix, and how long it's been waiting.
Exploit Status & Known PoCs a ladder, not a score
Current rung: Proof-of-concept published · 1 public repository, 2018-08-15.
- RUNG 1Nothing observed in held sources
- RUNG 2Proof-of-concept published · 1 public repository2018-08-15receipt
- RUNG 3Exploited in the wild · CISA KEV listed
- RUNG 4Ransomware campaign use known
Affected & Fixed Versions as published
Show all 20 published ranges
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.
What it is stated by the CNA
"deny-answer-aliases" is a little-used feature intended to help recursive server operators protect end users against DNS rebinding attacks, a potential method of circumventing the security model used by client browsers. However, a defect in this feature makes it easy, when the feature is in use, to experience an assertion failure in name.c. Affects BIND 9.7.0->9.8.8, 9.9.0->9.9.13, 9.10.0->9.10.8, 9.11.0->9.11.4, 9.12.0->9.12.2, 9.13.0->9.13.2. receipt
NVD's analysis a second authority
- severity
- 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- weakness
- CWE-617
- affected versions
- isc bind >= 9.7.0 < 9.8.8; isc bind >= 9.9.0 < 9.9.13; isc bind >= 9.10.0 < 9.10.8; and 17 more, listed in full below
check it yourself securityfocus.com lists.debian.org access.redhat.com access.redhat.com usn.ubuntu.com securitytracker.com +8 morereceipt
Dated events
Movement the material steps
Show all 37 observations
37 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
Siblings and hubs
Records related to this one
No record cites this identifier and it carries no alias. Its defect family is below.
Its defect family
isc bind
Of the 24 records in this family that state one, this holds the highest EPSS percentile: 0.99061.
Grouped by shared product and weakness, not by shared vulnerability. Each record's own state is on its own page.
Family membership: computed, pro@dim2000
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What usually comes next
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