No exploitation reportedFix available

CVE-2016-2775

No exploitation reported by the sources we read.

Published2016-07-19
WeaknessCWE-20

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

ISC BIND 9.x before 9.9.9-P2, 9.10.x before 9.10.4-P2, and 9.11.x before 9.11.0b2, when lwresd or the named lwres option is enabled, allows remote attackers to cause a denial of service (daemon crash) via a long request that uses the lightweight resolver protocol.

Timeline

dates in UTC

2016-07-1922:59CVE publishedNVD
2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2016-2775?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2016-2775?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Redhat enterprise linux eus

Branch	Affected	Fixed in	Source
7.2	= 7.2	no fix published	NVD
7.3	= 7.3	no fix published	NVD
7.4	= 7.4	no fix published	NVD
7.5	= 7.5	no fix published	NVD
7.6	= 7.6	no fix published	NVD
7.7	= 7.7	no fix published	NVD

Isc bind

Branch	Affected	Fixed in	Source
9.x	≥ 9.0, ≤ 9.9.8	no fix published	NVD
9.10	≥ 9.10.0, ≤ 9.10.3	no fix published	NVD
9.9	= 9.9.9	no fix published	NVD
9.10	= 9.10.4	no fix published	NVD
9.11	= 9.11.0	no fix published	NVD

Redhat enterprise linux server aus

Branch	Affected	Fixed in	Source
7.2	= 7.2	no fix published	NVD
7.3	= 7.3	no fix published	NVD
7.6	= 7.6	no fix published	NVD
7.7	= 7.7	no fix published	NVD

6 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

h20566.www2.hpe.comPatch · Vendor Advisory
kb.isc.orgPatch · Vendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.15.9read 2026-10-23
NVDCVSS 2.04.3read 2026-10-23
NVDweakness (CWE)CWE-20read 2026-10-23
FIRST EPSSEPSS score63.3 %read 2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2016-07-19
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2016-2775?

Is CVE-2016-2775 actively exploited?

Active exploitation of CVE-2016-2775 has not been confirmed. Its EPSS score was 63.3% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2016-2775?

CVE-2016-2775 has a CVSS v3 base score of 5.9 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.

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