[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fKSIi2U-7RlRqqmvyZgBeCbZi5sWMsr8KYODxhxCyqiw":3,"g5a-risk:CVE-2017-7901":238},{"success":4,"data":5,"meta":236},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":39,"epssPercentile":15,"epssTimeSeries":40,"severity":41,"affectedProducts":42,"affectedProductsCount":112,"references":113,"referencesCount":129,"weaknesses":130,"weaknessesCount":146,"isActivelyExploited":147,"cisaInfo":15,"otxData":15,"relatedBlogPosts":148,"seoMetadata":149,"configurations":174,"relatedVendorCves":234,"notableEvents":235},"CVE-2017-7901","What is CVE-2017-7901?","A Predictable Value Range from Previous Values issue was discovered in Rockwell Automation Allen-Bradley MicroLogix 1100 programmable-logic controllers 1763-L16AWA, Series A and B, Version 16.00 and prior versions; 1763-L16BBB, Series A and B, Version 16.00 and prior versions; 1763-L16BWA, Series A and B, Version 16.00 and prior versions; and 1763-L16DWD, Series A and B, Version 16.00 and prior versions and Allen-Bradley MicroLogix 1400 programmable logic controllers 1766-L32AWA, Series A and B, Version 16.00 and prior versions; 1766-L32BWA, Series A and B, Version 16.00 and prior versions; 1766-L32BWAA, Series A and B, Version 16.00 and prior versions; 1766-L32BXB, Series A and B, Version 16.00 and prior versions; 1766-L32BXBA, Series A and B, Version 16.00 and prior versions; and 1766-L32AWAA, Series A and B, Version 16.00 and prior versions. Insufficiently random TCP initial sequence numbers are generated, which may allow an attacker to predict the numbers from previous values. This may allow an attacker to spoof or disrupt TCP connections, resulting in a denial of service for the target device.","A Predictable Value Range from Previous Values issue was discovered in Rockwell Automation Allen-Bradley MicroLogix 1100 programmable-logic controllers 1763-...","2017-06-30T03:29:00.797","2025-04-20T01:37:25.86",8.6,"CVSS:3.0\u002FAV:N\u002FAC:L\u002FPR:N\u002FUI:N\u002FS:U\u002FC:L\u002FI:L\u002FA:H",{"CVSSMetricV31":15,"CVSSMetricV30":16,"CVSSMetricV2":29,"CVSSMetricV40":15},null,[17],{"Source":18,"Type":19,"CVSSData":20,"ExploitabilityScore":27,"ImpactScore":28},"nvd@nist.gov","Primary",{"Version":21,"VectorString":13,"AttackVector":22,"AttackComplexity":23,"PrivilegesRequired":24,"UserInteraction":24,"Scope":25,"ConfidentialityImpact":23,"IntegrityImpact":23,"AvailabilityImpact":26,"BaseScore":12,"BaseSeverity":26,"ExploitCodeMaturity":15,"RemediationLevel":15,"ReportConfidence":15,"TemporalScore":15,"TemporalSeverity":15,"ConfidentialityRequirement":15,"IntegrityRequirement":15,"AvailabilityRequirement":15,"ModifiedAttackVector":15,"ModifiedAttackComplexity":15,"ModifiedPrivilegesRequired":15,"ModifiedUserInteraction":15,"ModifiedScope":15,"ModifiedConfidentialityImpact":15,"ModifiedIntegrityImpact":15,"ModifiedAvailabilityImpact":15,"EnvironmentalScore":15,"EnvironmentalSeverity":15},"3.0","NETWORK","LOW","NONE","UNCHANGED","HIGH",3.9,4.7,[30],{"Source":18,"Type":19,"CVSSData":31,"BaseSeverity":26,"ExploitabilityScore":37,"ImpactScore":38,"ACInsufInfo":4,"ObtainAllPrivilege":15,"ObtainUserPrivilege":15,"ObtainOtherPrivilege":15,"UserInteractionRequired":15},{"Version":32,"VectorString":33,"AccessVector":22,"AccessComplexity":23,"Authentication":24,"ConfidentialityImpact":34,"IntegrityImpact":34,"AvailabilityImpact":35,"BaseScore":36,"BaseSeverity":15,"Exploitability":15,"RemediationLevel":15,"ReportConfidence":15,"TemporalScore":15,"CollateralDamagePotential":15,"TargetDistribution":15,"ConfidentialityRequirement":15,"IntegrityRequirement":15,"AvailabilityRequirement":15,"EnvironmentalScore":15},"2.0","AV:N\u002FAC:L\u002FAu:N\u002FC:P\u002FI:P\u002FA:C","PARTIAL","COMPLETE",9,10,8.5,0.06674,[39,39,39,39,39,39,39],"High",[43,48,51,54,57,60,63,66,69,73,76,79,82,85,88,91,94,97,100,103,106,109],{"vendor":44,"product":45,"version":46,"criteria":47,"vulnerable":4},"rockwellautomation","1763-l16awa_series_a","*","cpe:2.3:a:rockwellautomation:1763-l16awa_series_a:*:*:*:*:*:*:*:*",{"vendor":44,"product":49,"version":46,"criteria":50,"vulnerable":4},"1763-l16awa_series_b","cpe:2.3:a:rockwellautomation:1763-l16awa_series_b:*:*:*:*:*:*:*:*",{"vendor":44,"product":52,"version":46,"criteria":53,"vulnerable":4},"1763-l16bbb_series_a","cpe:2.3:a:rockwellautomation:1763-l16bbb_series_a:*:*:*:*:*:*:*:*",{"vendor":44,"product":55,"version":46,"criteria":56,"vulnerable":4},"1763-l16bbb_series_b","cpe:2.3:a:rockwellautomation:1763-l16bbb_series_b:*:*:*:*:*:*:*:*",{"vendor":44,"product":58,"version":46,"criteria":59,"vulnerable":4},"1763-l16bwa_series_a","cpe:2.3:a:rockwellautomation:1763-l16bwa_series_a:*:*:*:*:*:*:*:*",{"vendor":44,"product":61,"version":46,"criteria":62,"vulnerable":4},"1763-l16bwa_series_b","cpe:2.3:a:rockwellautomation:1763-l16bwa_series_b:*:*:*:*:*:*:*:*",{"vendor":44,"product":64,"version":46,"criteria":65,"vulnerable":4},"1763-l16dwd_series_a","cpe:2.3:a:rockwellautomation:1763-l16dwd_series_a:*:*:*:*:*:*:*:*",{"vendor":44,"product":67,"version":46,"criteria":68,"vulnerable":4},"1763-l16dwd_series_b","cpe:2.3:a:rockwellautomation:1763-l16dwd_series_b:*:*:*:*:*:*:*:*",{"vendor":44,"product":70,"version":71,"criteria":72,"vulnerable":4},"ab_micrologix_controller","1100","cpe:2.3:h:rockwellautomation:ab_micrologix_controller:1100:*:*:*:*:*:*:*",{"vendor":44,"product":74,"version":46,"criteria":75,"vulnerable":4},"1766-l32awa_series_a","cpe:2.3:a:rockwellautomation:1766-l32awa_series_a:*:*:*:*:*:*:*:*",{"vendor":44,"product":77,"version":46,"criteria":78,"vulnerable":4},"1766-l32awa_series_b","cpe:2.3:a:rockwellautomation:1766-l32awa_series_b:*:*:*:*:*:*:*:*",{"vendor":44,"product":80,"version":46,"criteria":81,"vulnerable":4},"1766-l32awaa_series_a","cpe:2.3:a:rockwellautomation:1766-l32awaa_series_a:*:*:*:*:*:*:*:*",{"vendor":44,"product":83,"version":46,"criteria":84,"vulnerable":4},"1766-l32awaa_series_b","cpe:2.3:a:rockwellautomation:1766-l32awaa_series_b:*:*:*:*:*:*:*:*",{"vendor":44,"product":86,"version":46,"criteria":87,"vulnerable":4},"1766-l32bwa_series_a","cpe:2.3:a:rockwellautomation:1766-l32bwa_series_a:*:*:*:*:*:*:*:*",{"vendor":44,"product":89,"version":46,"criteria":90,"vulnerable":4},"1766-l32bwa_series_b","cpe:2.3:a:rockwellautomation:1766-l32bwa_series_b:*:*:*:*:*:*:*:*",{"vendor":44,"product":92,"version":46,"criteria":93,"vulnerable":4},"1766-l32bwaa_series_a","cpe:2.3:a:rockwellautomation:1766-l32bwaa_series_a:*:*:*:*:*:*:*:*",{"vendor":44,"product":95,"version":46,"criteria":96,"vulnerable":4},"1766-l32bwaa_series_b","cpe:2.3:a:rockwellautomation:1766-l32bwaa_series_b:*:*:*:*:*:*:*:*",{"vendor":44,"product":98,"version":46,"criteria":99,"vulnerable":4},"1766-l32bxb_series_a","cpe:2.3:a:rockwellautomation:1766-l32bxb_series_a:*:*:*:*:*:*:*:*",{"vendor":44,"product":101,"version":46,"criteria":102,"vulnerable":4},"1766-l32bxb_s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range of possibilities for the next value that could be generated.","The output of a random number generator should not be predictable based on observations of previous values. In some cases, an attacker cannot predict the exact value that will be produced next, but can narrow down the possibilities significantly. This reduces the amount of effort to perform a brute force attack. For example, suppose the product generates random numbers between 1 and 100, but it always produces a larger value until it reaches 100. If the generator produces an 80, then the attacker knows that the next value will be somewhere between 81 and 100. Instead of 100 possibilities, the attacker only needs to consider 20.","Draft","Base",2,false,[],{"title":150,"metaDescription":151,"keywords":152,"canonicalUrl":153,"structuredData":154},"What is CVE-2017-7901? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2017-7901, a high severity cyber security vulnerability from 2017. A Predictable Value Range from Previous Values issue was dis...","CVE-2017-7901, CVE-2017-7901 vulnerability, CVE-2017-7901 security, high severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2017, CVSS score, exploit, patch, remediation, rockwellautomation security, 1763-l16awa_series_a vulnerability, 1763-l16awa_series_b vulnerability, 1763-l16bbb_series_a vulnerability, 1763-l16bbb_series_b vulnerability, 1763-l16bwa_series_a vulnerability","\u002Fwhat-is\u002Fcve-2017-7901",{"@context":155,"@type":156,"headline":150,"description":151,"datePublished":10,"dateModified":11,"author":157,"publisher":161,"about":165,"mainEntityOfPage":169,"articleSection":172,"keywords":173},"https:\u002F\u002Fschema.org","TechArticle",{"@type":158,"name":159,"url":160},"Organization","Precursor 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