Evidence dossier

CVE-2016-6366

CVE-2016-6366

80.0–95.7Priority evidence range

As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

Buffer overflow in Cisco Adaptive Security Appliance (ASA) Software through 9.4.2.3 on ASA 5500, ASA 5500-X, ASA Services Module, ASA 1000V, ASAv, Firepower 9300 ASA Security Module, PIX, and FWSM devices allows remote authenticated users to execute arbitrary code via crafted IPv4 SNMP packets, aka Bug ID CSCva92151 or EXTRABACON.

State: PUBLISHED
Published: Aug 18, 2016
Updated: Jan 12, 2026
Evidence coverage: 85%

CISA KEVCatalog member

Apply updates per vendor instructions.

FIRST EPSS87.56%

2026-07-18 · v2026.06.15 · percentile 99.7%

Source stateNo scored conflict

Distinct CVSS assessments remain side by side; none are averaged.

Source comparison

Who said what

CISA-ADPindependent enrichment

container

CISA ADP Vulnrichment

Jul 19, 2026Original evidence ↗

ciscooriginal assertion

container

Buffer overflow in Cisco Adaptive Security Appliance (ASA) Software through 9.4.2.3 on ASA 5500, ASA 5500-X, ASA Services Module, ASA 1000V, ASAv, Firepower 9300 ASA Security Module, PIX, and FWSM devices allows remote authenticated users to execute arbitrary code via crafted IPv4 SNMP packets, aka Bug ID CSCva92151 or EXTRABACON.

Jul 19, 2026Original evidence ↗

CVEderivative copy

container

CVE Program Container

Jul 19, 2026Original evidence ↗

CISA KEVoriginal assertion

observed_exploitation

Cisco Adaptive Security Appliance (ASA) SNMP Buffer Overflow Vulnerability

Jul 19, 2026Original evidence ↗

FIRST EPSSoriginal assertion

model_probability

Probability 0.875650000000; percentile 0.997390000000

Jul 19, 2026Original evidence ↗

Applicability

Cited product scope

Trace impact →

n/an/a

[{"status": "affected", "version": "n/a"}]unknown

Unknown vendorUnknown product

cpe:2.3:h:cisco:7604:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:7606-s:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:7609-s:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:7613-s:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asa_5500:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asa_5500_csc-ssm:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asa_5500-x:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asa_5505:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asa_5506h-x:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asa_5506w-x:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asa_5506-x:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asa_5508-x:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asa_5510:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asa_5512-x:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asa_5515-x:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asa_5516-x:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asa_5520:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asa_5525-x:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asa_5540:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asa_5545-x:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asa_5550:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asa_5555-x:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asa_5580:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asa_5585-x:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:catalyst_6500:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:catalyst_6500-e:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:catalyst_6503-e:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:catalyst_6504-e:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:catalyst_6506-e:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:catalyst_6509-e:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:catalyst_6509-neb-a:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:catalyst_6509-v-e:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:catalyst_6513:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:catalyst_6513-e:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:pix_firewall_501:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:pix_firewall_506:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:pix_firewall_506e:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:pix_firewall_515:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:pix_firewall_515e:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:pix_firewall_520:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:pix_firewall_525:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:pix_firewall_535:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*; start including 7.2.1; end excluding 9.0.4.40supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*; start including 9.1.1; end excluding 9.1.7\(9\)supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*; start including 9.2.0; end excluding 9.2.4\(14\)supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*; start including 9.3.0; end excluding 9.3.3\(10\)supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*; start including 9.4.0.115; end excluding 9.4.3\(8\)

supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*; start including 9.5.0; end including 9.5\(3\)supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*; start including 9.6.0; end excluding 9.6.1\(11\)supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:asa_1000v_cloud_firewall_software:8.7.1:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:asa_1000v_cloud_firewall_software:8.7.1.1:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:pix_firewall_software:-:*:*:*:*:*:*:*supported

Assessments

CVSS by origin

8.8

nvd@nist.govCVSS 3.1 · role PrimaryCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

8.5

nvd@nist.govCVSS 2.0 · role PrimaryAV:N/AC:M/Au:S/C:C/I:C/A:C

8.8

134c704f-9b21-4f2e-91b3-4a467353bcc0CVSS 3.1 · role SecondaryCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

8.8

CISA-ADPCVSS 3.1 · role unknownCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Limitations and unknowns

KEV membership is authoritative for the catalog, not proof of exposure in any environment.
EPSS is a dated model probability and not an individual-environment prediction.
Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown.
NVD-carried upstream facts remain derivative and are not independent corroboration.
Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
Factor D is unknown in Public Core because no accepted canonical mapping-obligation ledger is present.
Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.