CVE-2026-20068
- Source
- https://cve.org/CVERecord?id=CVE-2026-20068
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-20068.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-20068
- Published
- 2026-03-04T18:16:22Z
- Modified
- 2026-08-20T03:54:01Z
- Severity
-
- 5.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L CVSS Calculator
- Summary
- [none]
- Details
-
Multiple Cisco products are affected by a vulnerability in the Snort 3 detection engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection.
This vulnerability is due to incomplete error checking when parsing remote procedure call (RPC) data. An attacker could exploit this vulnerability by sending crafted RPC packets through an established connection to be parsed by Snort 3. A successful exploit could allow the attacker to cause a DoS condition when the Snort 3 Detection Engine unexpectedly restarts.
- Database specific
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"cpe:2.3:a:cisco:cyber_vision:4.4.0:*:*:*:*:*:*:*", "cpe:2.3:a:cisco:cyber_vision:4.4.1:*:*:*:*:*:*:*", "cpe:2.3:a:cisco:cyber_vision:4.4.2:*:*:*:*:*:*:*", "cpe:2.3:a:cisco:cyber_vision:4.4.3:*:*:*:*:*:*:*", "cpe:2.3:a:cisco:cyber_vision:5.0.0:*:*:*:*:*:*:*", "cpe:2.3:a:cisco:cyber_vision:5.0.1:*:*:*:*:*:*:*", "cpe:2.3:a:cisco:cyber_vision:5.0.2:*:*:*:*:*:*:*", "cpe:2.3:a:cisco:cyber_vision:5.1.0:*:*:*:*:*:*:*", "cpe:2.3:a:cisco:cyber_vision:5.1.1:*:*:*:*:*:*:*", "cpe:2.3:a:cisco:cyber_vision:5.1.2:*:*:*:*:*:*:*", "cpe:2.3:a:cisco:cyber_vision:5.1.3:*:*:*:*:*:*:*", "cpe:2.3:a:cisco:cyber_vision:5.2.0:*:*:*:*:*:*:*", "cpe:2.3:a:cisco:cyber_vision:5.2.1:*:*:*:*:*:*:*", "cpe:2.3:a:cisco:cyber_vision:5.3.0:*:*:*:*:*:*:*", "cpe:2.3:a:cisco:cyber_vision:5.3.1:*:*:*:*:*:*:*", "cpe:2.3:a:cisco:cyber_vision:5.3.2:*:*:*:*:*:*:*" ], "extracted_events": [ { "introduced": "3.0.0" }, { "last_affected": "3.0.0" }, { "introduced": "3.0.1" }, { "last_affected": "3.0.1" }, { "introduced": "3.0.2" }, { 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"introduced": "4.1.1" }, { "last_affected": "4.1.1" }, { "introduced": "4.1.2" }, { "last_affected": "4.1.2" }, { "introduced": "4.1.3" }, { "last_affected": "4.1.3" }, { "introduced": "4.1.4" }, { "last_affected": "4.1.4" }, { "introduced": "4.1.5" }, { "last_affected": "4.1.5" }, { "introduced": "4.1.6" }, { "last_affected": "4.1.6" }, { "introduced": "4.1.7" }, { "last_affected": "4.1.7" }, { "introduced": "4.2.0" }, { "last_affected": "4.2.0" }, { "introduced": "4.2.1" }, { "last_affected": "4.2.1" }, { "introduced": "4.2.2" }, { "last_affected": "4.2.2" }, { "introduced": "4.2.3" }, { "last_affected": "4.2.3" }, { "introduced": "4.2.4" }, { "last_affected": "4.2.4" }, { "introduced": "4.2.6" }, { "last_affected": "4.2.6" }, { "introduced": "4.3.0" }, { "last_affected": "4.3.0" }, { "introduced": "4.3.1" }, { "last_affected": "4.3.1" }, { "introduced": "4.3.2" }, { "last_affected": "4.3.2" }, { "introduced": "4.3.3" }, { "last_affected": "4.3.3" }, { "introduced": "4.4.0" }, { 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"cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.10.2:*:*:*:*:*:*:*", "cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.10:*:*:*:*:*:*:*", "cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.4.1:*:*:*:*:*:*:*", "cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.4:*:*:*:*:*:*:*", "cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.5.1:*:*:*:*:*:*:*", "cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.5.2:*:*:*:*:*:*:*", "cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.5:*:*:*:*:*:*:*", "cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.6:*:*:*:*:*:*:*", "cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.7:*:*:*:*:*:*:*", "cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.8.1:*:*:*:*:*:*:*", "cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.8:*:*:*:*:*:*:*", "cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.9:*:*:*:*:*:*:*", "cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.0:*:*:*:*:*:*:*", "cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.1.1:*:*:*:*:*:*:*", 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"cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.7.1a:*:*:*:*:*:*:*", "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.7.2:*:*:*:*:*:*:*", "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.8.1a:*:*:*:*:*:*:*", "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.1a:*:*:*:*:*:*:*", "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.2a:*:*:*:*:*:*:*", "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.3a:*:*:*:*:*:*:*", "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.4:*:*:*:*:*:*:*", "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.4a:*:*:*:*:*:*:*", "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.5a:*:*:*:*:*:*:*", "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.5e:*:*:*:*:*:*:*", "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.5f:*:*:*:*:*:*:*", "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.6:*:*:*:*:*:*:*", "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.7a:*:*:*:*:*:*:*", "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.7b:*:*:*:*:*:*:*", "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.8:*:*:*:*:*:*:*" ], "extracted_events": [ { "introduced": "17.2.1r" }, { "last_affected": "17.2.1r" }, { "introduced": "17.3.1a" }, { "last_affected": "17.3.1a" }, { "introduced": "17.3.2" }, { "last_affected": "17.3.2" }, { "introduced": "17.3.3" }, { "last_affected": "17.3.3" }, { "introduced": "17.3.4" }, { "last_affected": "17.3.4" }, { "introduced": "17.3.4a" }, { "last_affected": "17.3.4a" }, { "introduced": "17.3.5" }, { "last_affected": "17.3.5" }, { "introduced": "17.3.6" }, { "last_affected": "17.3.6" }, { "introduced": "17.3.7" }, { "last_affected": "17.3.7" }, { "introduced": "17.3.8" }, { "last_affected": "17.3.8" }, { "introduced": "17.3.8a" }, { "last_affected": "17.3.8a" }, { "introduced": "17.4.1a" }, { "last_affected": "17.4.1a" }, { "introduced": "17.4.1b" }, { "last_affected": "17.4.1b" }, { "introduced": "17.4.2" }, { "last_affected": "17.4.2" }, { "introduced": "17.5.1" }, { "last_affected": "17.5.1" }, { "introduced": "17.5.1a" }, { "last_affected": "17.5.1a" }, { "introduced": "17.6.1a" }, { "last_affected": "17.6.1a" }, { "introduced": "17.6.2" }, { "last_affected": "17.6.2" }, { "introduced": "17.6.3" }, { "last_affected": "17.6.3" }, { "introduced": "17.6.3a" }, { "last_affected": "17.6.3a" }, { "introduced": "17.6.4" }, { "last_affected": "17.6.4" }, { "introduced": "17.6.5" }, { "last_affected": "17.6.5" }, { "introduced": "17.6.6" }, { "last_affected": "17.6.6" }, { "introduced": "17.6.6a" }, { "last_affected": "17.6.6a" }, { "introduced": "17.6.7" }, { "last_affected": "17.6.7" }, { "introduced": "17.6.8" }, { "last_affected": "17.6.8" }, { "introduced": "17.6.8a" }, { "last_affected": "17.6.8a" }, { "introduced": "17.7.1a" }, { "last_affected": "17.7.1a" }, { "introduced": "17.7.2" }, { "last_affected": "17.7.2" }, { "introduced": "17.8.1a" }, { "last_affected": "17.8.1a" }, { "introduced": "17.9.1a" }, { "last_affected": "17.9.1a" }, { "introduced": "17.9.2a" }, { "last_affected": "17.9.2a" }, { "introduced": "17.9.3a" }, { "last_affected": "17.9.3a" }, { "introduced": "17.9.4" }, { "last_affected": "17.9.4" }, { "introduced": "17.9.4a" }, { "last_affected": "17.9.4a" }, { "introduced": "17.9.5a" }, { "last_affected": "17.9.5a" }, { "introduced": "17.9.5e" }, { "last_affected": "17.9.5e" }, { "introduced": "17.9.5f" }, { "last_affected": "17.9.5f" }, { "introduced": "17.9.6" }, { "last_affected": "17.9.6" }, { "introduced": "17.9.7a" }, { "last_affected": "17.9.7a" }, { "introduced": "17.9.7b" }, { "last_affected": "17.9.7b" }, { "introduced": "17.9.8" }, { "last_affected": "17.9.8" }, { "introduced": "17.10.1a" }, { "last_affected": "17.10.1a" }, { "introduced": "17.11.1a" }, { "last_affected": "17.11.1a" }, { "introduced": "17.12.1a" }, { "last_affected": "17.12.1a" }, { "introduced": "17.12.2" }, { "last_affected": "17.12.2" }, { "introduced": "17.12.3" }, { "last_affected": "17.12.3" }, { "introduced": "17.12.3a" }, { "last_affected": "17.12.3a" }, { "introduced": "17.12.4" }, { "last_affected": "17.12.4" }, { "introduced": "17.12.4a" }, { "last_affected": "17.12.4a" }, { "introduced": "17.12.4b" }, { "last_affected": "17.12.4b" }, { "introduced": "17.12.5" }, { "last_affected": "17.12.5" }, { "introduced": "17.12.5a" }, { "last_affected": "17.12.5a" }, { "introduced": "17.12.5b" }, { "last_affected": "17.12.5b" }, { "introduced": "17.12.5c" }, { "last_affected": "17.12.5c" }, { "introduced": "17.12.5d" }, { "last_affected": "17.12.5d" }, { "introduced": "17.12.6" }, { "last_affected": "17.12.6" }, { "introduced": "17.13.1a" }, { "last_affected": "17.13.1a" }, { "introduced": "17.14.1a" }, { "last_affected": "17.14.1a" }, { "introduced": "17.15.1a" }, { "last_affected": "17.15.1a" }, { "introduced": "17.15.2a" }, { "last_affected": "17.15.2a" }, { "introduced": "17.15.2c" }, { "last_affected": "17.15.2c" }, { "introduced": "17.15.3" }, { "last_affected": "17.15.3" }, { "introduced": "17.15.3a" }, { "last_affected": "17.15.3a" }, { "introduced": "17.15.4" }, { "last_affected": "17.15.4" }, { "introduced": "17.15.4c" }, { "last_affected": "17.15.4c" }, { "introduced": "17.16.1a" }, { "last_affected": "17.16.1a" }, { "introduced": "17.17.1" }, { "last_affected": "17.17.1" }, { "introduced": "17.18.1" }, { "last_affected": "17.18.1" }, { "introduced": "17.18.1a" }, { "last_affected": "17.18.1a" }, { "introduced": "17.18.2" }, { "last_affected": "17.18.2" } ], "source": "CPE_STRING", "vendor_product": "cisco:unified_threat_defense_snort_intrusion_prevention_system_engine" } ] }- References
Affected packages
Git / github.com/snort3/snort3
Affected versions
3.*
3.0.0-233
3.0.0-239
3.0.0-240
3.0.0-241
3.0.0-242
3.0.0-243
3.0.0-244
3.0.0-245
3.0.0-246
3.0.0-247
3.0.0-248
3.0.0-249
3.0.0-250
3.0.0-251
3.0.0-252
3.0.0-253
3.0.0-254
3.0.0-255
3.0.0-256
3.0.0-257
3.0.0-258
3.0.0-259
3.0.0-260
3.0.0-261
3.0.0-262
3.0.0-263
3.0.0-264
3.0.0-265
3.0.0-266
3.0.0-267
3.0.0-268
3.0.0-269
3.0.0-270
3.0.0_253
3.0.1-1
3.0.1-2
3.0.1-3
3.0.1-4
3.0.1-5
3.0.2-1
3.0.2-2
3.0.2-3
3.0.2-4
3.0.2-5
3.0.2-6
3.0.3-1
3.0.3-2
3.0.3-3
3.0.3-4
3.0.3-5
3.0.3-6
3.1.0.0
3.1.1.0
3.1.10.0
3.1.11.0
3.1.12.0
3.1.13.0
3.1.14.0
3.1.15.0
3.1.16.0
3.1.17.0
3.1.18.0
3.1.19.0
3.1.2.0
3.1.20.0
3.1.21.0
3.1.22.0
3.1.23.0
3.1.24.0
3.1.25.0
3.1.26.0
3.1.27.0
3.1.28.0
3.1.29.0
3.1.3.0
3.1.30.0
3.1.31.0
3.1.32.0
3.1.33.0
3.1.34.0
3.1.35.0
3.1.36.0
3.1.37.0
3.1.38.0
3.1.39.0
3.1.4.0
3.1.40.0
3.1.41.0
3.1.42.0
3.1.43.0
3.1.45.0
3.1.47.0
3.1.48.0
3.1.49.0
3.1.5.0
3.1.50.0
3.1.51.0
3.1.52.0
3.1.53.0
3.1.55.0
3.1.56.0
3.1.57.0
3.1.58.0
3.1.59.0
3.1.6.0
3.1.60.0
3.1.61.0
3.1.62.0
3.1.63.0
3.1.64.0
3.1.65.0
3.1.66.0
3.1.67.0
3.1.69.0
3.1.7.0
3.1.70.0
3.1.71.0
3.1.72.0
3.1.73.0
3.1.74.0
3.1.75.0
3.1.76.0
3.1.77.0
3.1.78.0
3.1.79.0
3.1.8.0
3.1.81.0
3.1.82.0
3.1.83.0
3.1.84.0
3.1.9.0
3.2.1.0
3.2.2.0
3.3.0.0
3.3.1.0
3.3.2.0
3.3.3.0
3.3.4.0
3.3.5.0
3.3.7.0
3.4.0.0
3.5.0.0
3.5.1.0
3.5.2.0
3.6.0.0
3.6.1.0
3.6.2.0
3.6.3.0
3.7.0.0
3.7.1.0
3.7.2.0
3.7.3.0
3.7.4.0
3.8.1.0
3.9.0.0
3.9.1.0
Other
BUILD_233
BUILD_239
BUILD_240
BUILD_241
BUILD_242
BUILD_243
BUILD_247
BUILD_248