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No exploitation reported

CVE-2016-6876

No exploitation reported by the sources we read.

  • Published2016-09-07
  • WeaknessCWE-399

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

The RESOLV::lookup iRule command in F5 BIG-IP LTM, APM, ASM, and Link Controller 10.2.1 through 10.2.4, 11.2.1, 11.4.x, 11.5.x before 11.5.4 HF2, 11.6.x before 11.6.1, and 12.0.0 before HF3; BIG-IP AAM, AFM, and PEM 11.4.x, 11.5.x before 11.5.4 HF2, 11.6.x before 11.6.1, and 12.0.0 before HF3; BIG-IP Analytics 11.2.1, 11.4.x, 11.5.x before 11.5.4 HF2, 11.6.x before 11.6.1, and 12.0.0 before HF3; BIG-IP DNS 12.0.0 before HF3; BIG-IP Edge Gateway, WebAccelerator, and WOM 10.2.1 through 10.2.4 and 11.2.1; BIG-IP GTM 10.2.1 through 10.2.4, 11.2.1, 11.4.x, 11.5.x before 11.5.4 HF2, and 11.6.x before 11.6.1; and BIG-IP PSM 10.2.1 through 10.2.4 and 11.4.0 through 11.4.1 allows remote DNS servers to cause a denial of service (CPU consumption or Traffic Management Microkernel crash) via a crafted PTR response.

Timeline

dates in UTC
  1. 2016-09-0719:28CVE publishedNVD

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-2016-6876?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2016-6876?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
F5 big-ip access policy manager
BranchAffectedFixed in
10.2= 10.2.1no fix published
10.2= 10.2.2no fix published
10.2= 10.2.3no fix published
10.2= 10.2.4no fix published
11.2= 11.2.1no fix published
11.4= 11.4.0no fix published
11.4= 11.4.1no fix published
11.5= 11.5.0no fix published
11.5= 11.5.1no fix published
11.5= 11.5.2no fix published
11.5= 11.5.3no fix published
11.5= 11.5.4no fix published
F5 big-ip application security manager
BranchAffectedFixed in
10.2= 10.2.1no fix published
10.2= 10.2.2no fix published
10.2= 10.2.3no fix published
10.2= 10.2.4no fix published
11.2= 11.2.1no fix published
11.4= 11.4.0no fix published
11.4= 11.4.1no fix published
11.5= 11.5.0no fix published
11.5= 11.5.1no fix published
11.5= 11.5.2no fix published
11.5= 11.5.3no fix published
11.5= 11.5.4no fix published
F5 big-ip global traffic manager
BranchAffectedFixed in
10.2= 10.2.1no fix published
10.2= 10.2.2no fix published
10.2= 10.2.3no fix published
10.2= 10.2.4no fix published
11.2= 11.2.1no fix published
11.4= 11.4.0no fix published
11.4= 11.4.1no fix published
11.5= 11.5.0no fix published
11.5= 11.5.1no fix published
11.5= 11.5.2no fix published
11.5= 11.5.3no fix published
11.5= 11.5.4no fix published

11 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

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • NVDCVSS 3.07.5read 2026-10-23
  • NVDCVSS 2.05read 2026-10-23
  • NVDweakness (CWE)CWE-399read 2026-10-23
  • FIRST EPSSEPSS score1.6 %2026-10-23

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2016-09-07
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2016-6876?

The RESOLV::lookup iRule command in F5 BIG-IP LTM, APM, ASM, and Link Controller 10.2.1 through 10.2.4, 11.2.1, 11.4.x, 11.5.x before 11.5.4 HF2, 11.6.x before 11.6.1, and 12.0.0 before HF3; BIG-IP AAM, AFM, and PEM 11.4.x, 11.5.x before 11.5.4 HF2, 11.6.x before 11.6.1, and 12.0.0 before HF3; BIG-IP Analytics 11.2.1, 11.4.x, 11.5.x before 11.5.4 HF2, 11.6.x before 11.6.1, and 12.0.0 before HF3; BIG-IP DNS 12.0.0 before HF3; BIG-IP Edge Gateway, WebAccelerator, and WOM 10.2.1 through 10.2.4 and 11.2.1; BIG-IP GTM 10.2.1 through 10.2.4, 11.2.1, 11.4.x, 11.5.x before 11.5.4 HF2, and 11.6.x before 11.6.1; and BIG-IP PSM 10.2.1 through 10.2.4 and 11.4.0 through 11.4.1 allows remote DNS servers to cause a denial of service (CPU consumption or Traffic Management Microkernel crash) via a crafted PTR response.

Is CVE-2016-6876 actively exploited?

Active exploitation of CVE-2016-6876 has not been confirmed. Its EPSS score was 1.6% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2016-6876?

CVE-2016-6876 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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