{"history":[{"alert":0,"cve":"CVE-2025-27915","id":22862,"kind":"epss","observed_at":1794500401,"payload":"{\"date\": \"2026-11-12\", \"epss\": 0.04064, \"percentile\": 0.9081}"},{"alert":0,"cve":"CVE-2025-27915","id":20482,"kind":"epss","observed_at":1794327601,"payload":"{\"date\": \"2026-11-10\", \"epss\": 0.04064, \"percentile\": 0.90753}"},{"alert":0,"cve":"CVE-2025-27915","id":18451,"kind":"epss","observed_at":1794241201,"payload":"{\"date\": \"2026-11-09\", \"epss\": 0.04064, \"percentile\": 0.90741}"},{"alert":0,"cve":"CVE-2025-27915","id":16515,"kind":"epss","observed_at":1794154800,"payload":"{\"date\": \"2026-11-08\", \"epss\": 0.04064, \"percentile\": 0.90735}"},{"alert":0,"cve":"CVE-2025-27915","id":14493,"kind":"epss","observed_at":1794068402,"payload":"{\"date\": \"2026-11-07\", \"epss\": 0.04064, \"percentile\": 0.90729}"},{"alert":0,"cve":"CVE-2025-27915","id":12275,"kind":"epss","observed_at":1793982001,"payload":"{\"date\": \"2026-11-06\", \"epss\": 0.04064, \"percentile\": 0.90714}"},{"alert":0,"cve":"CVE-2025-27915","id":10261,"kind":"epss","observed_at":1793938800,"payload":"{\"date\": \"2026-11-05\", \"epss\": 0.04064, \"percentile\": 0.90703}"},{"alert":0,"cve":"CVE-2025-27915","id":7810,"kind":"epss","observed_at":1793809200,"payload":"{\"date\": \"2026-11-04\", \"epss\": 0.04064, \"percentile\": 0.90696}"},{"alert":0,"cve":"CVE-2025-27915","id":5587,"kind":"epss","observed_at":1793722800,"payload":"{\"date\": \"2026-11-03\", \"epss\": 0.04064, \"percentile\": 0.90679}"},{"alert":1,"cve":"CVE-2025-27915","id":4051,"kind":"cna","observed_at":1793722800,"payload":"{\"containers\": {\"adp\": [{\"metrics\": [{\"cvssV3_1\": {\"attackComplexity\": \"LOW\", \"attackVector\": \"NETWORK\", \"availabilityImpact\": \"NONE\", \"baseScore\": 5.4, \"baseSeverity\": \"MEDIUM\", \"confidentialityImpact\": \"LOW\", \"integrityImpact\": \"LOW\", \"privilegesRequired\": \"LOW\", \"scope\": \"CHANGED\", \"userInteraction\": \"REQUIRED\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N\", \"version\": \"3.1\"}}, {\"other\": {\"content\": {\"id\": \"CVE-2025-27915\", \"options\": [{\"Exploitation\": \"active\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"role\": \"CISA Coordinator\", \"timestamp\": \"2025-10-07T03:55:56.855156Z\", \"version\": \"2.0.3\"}, \"type\": \"ssvc\"}}, {\"other\": {\"content\": {\"dateAdded\": \"2025-10-07\", \"reference\": \"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-27915\"}, \"type\": \"kev\"}}], \"problemTypes\": [{\"descriptions\": [{\"cweId\": \"CWE-79\", \"description\": \"CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')\", \"lang\": \"en\", \"type\": \"CWE\"}]}], \"providerMetadata\": {\"dateUpdated\": \"2026-02-26T19:09:35.780Z\", \"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\"}, \"references\": [{\"url\": \"https://strikeready.com/blog/0day-ics-attack-in-the-wild/\"}, {\"url\": \"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-27915\"}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2025-10-07T00:00:00.000Z\", \"value\": \"CVE-2025-27915 added to CISA KEV\"}], \"title\": \"CISA ADP Vulnrichment\"}], \"cna\": {\"affected\": [{\"product\": \"n/a\", \"vendor\": \"n/a\", \"versions\": [{\"status\": \"affected\", \"version\": \"n/a\"}]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"An issue was discovered in Zimbra Collaboration (ZCS) 9.0 and 10.0 and 10.1. A stored cross-site scripting (XSS) vulnerability exists in the Classic Web Client due to insufficient sanitization of HTML content in ICS files. When a user views an e-mail message containing a malicious ICS entry, its embedded JavaScript executes via an ontoggle event inside a <details> tag. This allows an attacker to run arbitrary JavaScript within the victim's session, potentially leading to unauthorized actions such as setting e-mail filters to redirect messages to an attacker-controlled address. As a result, an attacker can perform unauthorized actions on the victim's account, including e-mail redirection and data exfiltration.\"}], \"problemTypes\": [{\"descriptions\": [{\"description\": \"n/a\", \"lang\": \"en\", \"type\": \"text\"}]}], \"providerMetadata\": {\"dateUpdated\": \"2025-03-12T14:31:38.012Z\", \"orgId\": \"8254265b-2729-46b6-b9e3-3dfca2d5bfca\", \"shortName\": \"mitre\"}, \"references\": [{\"url\": \"https://wiki.zimbra.com/wiki/Security_Center\"}, {\"url\": \"https://wiki.zimbra.com/wiki/Zimbra_Releases/10.1.5#Security_Fixes\"}, {\"url\": \"https://wiki.zimbra.com/wiki/Zimbra_Releases/10.0.13#Security_Fixes\"}, {\"url\": \"https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P44#Security_Fixes\"}]}}, \"cveMetadata\": {\"assignerOrgId\": \"8254265b-2729-46b6-b9e3-3dfca2d5bfca\", \"assignerShortName\": \"mitre\", \"cveId\": \"CVE-2025-27915\", \"datePublished\": \"2025-03-12T00:00:00.000Z\", \"dateReserved\": \"2025-03-10T00:00:00.000Z\", \"dateUpdated\": \"2026-02-26T19:09:35.780Z\", \"state\": \"PUBLISHED\"}, \"dataType\": \"CVE_RECORD\", \"dataVersion\": \"5.2\"}"},{"alert":0,"cve":"CVE-2025-27915","id":3369,"kind":"epss","observed_at":1793665375,"payload":"{\"date\": \"2026-11-02\", \"epss\": 0.04064, \"percentile\": 0.90667}"},{"alert":1,"cve":"CVE-2025-27915","id":332,"kind":"kev","observed_at":1793665375,"payload":"{\"cveID\": \"CVE-2025-27915\", \"cwes\": [\"CWE-79\"], \"dateAdded\": \"2025-10-07\", \"dueDate\": \"2025-10-28\", \"forensicTriage\": \"No\", \"knownRansomwareCampaignUse\": \"Unknown\", \"notes\": \"https://wiki.zimbra.com/wiki/Security_Center ; https://nvd.nist.gov/vuln/detail/CVE-2025-27915\", \"product\": \"Zimbra Collaboration Suite (ZCS)\", \"requiredAction\": \"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.\", \"shortDescription\": \"Synacor Zimbra Collaboration Suite (ZCS) contains a cross-site scripting vulnerability that exists in the Classic Web Client due to insufficient sanitization of HTML content in ICS files. When a user views an e-mail message containing a malicious ICS entry, its embedded JavaScript executes via an ontoggle event inside a tag. This allows an attacker to run arbitrary JavaScript within the victim's session, potentially leading to unauthorized actions such as setting e-mail filters to redirect messages to an attacker-controlled address. As a result, an attacker can perform unauthorized actions on the victim's account, including e-mail redirection and data exfiltration.\", \"vendorProject\": \"Synacor\", \"vulnerabilityName\": \"Synacor Zimbra Collaboration Suite (ZCS) Cross-site Scripting Vulnerability\"}"}],"record":{"affected":[{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}],"cna":{"containers":{"adp":[{"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.4,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","version":"3.1"}},{"other":{"content":{"id":"CVE-2025-27915","options":[{"Exploitation":"active"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","timestamp":"2025-10-07T03:55:56.855156Z","version":"2.0.3"},"type":"ssvc"}},{"other":{"content":{"dateAdded":"2025-10-07","reference":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-27915"},"type":"kev"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","description":"CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-02-26T19:09:35.780Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"references":[{"url":"https://strikeready.com/blog/0day-ics-attack-in-the-wild/"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-27915"}],"timeline":[{"lang":"en","time":"2025-10-07T00:00:00.000Z","value":"CVE-2025-27915 added to CISA KEV"}],"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}],"descriptions":[{"lang":"en","value":"An issue was discovered in Zimbra Collaboration (ZCS) 9.0 and 10.0 and 10.1. A stored cross-site scripting (XSS) vulnerability exists in the Classic Web Client due to insufficient sanitization of HTML content in ICS files. When a user views an e-mail message containing a malicious ICS entry, its embedded JavaScript executes via an ontoggle event inside a <details> tag. This allows an attacker to run arbitrary JavaScript within the victim's session, potentially leading to unauthorized actions such as setting e-mail filters to redirect messages to an attacker-controlled address. As a result, an attacker can perform unauthorized actions on the victim's account, including e-mail redirection and data exfiltration."}],"problemTypes":[{"descriptions":[{"description":"n/a","lang":"en","type":"text"}]}],"providerMetadata":{"dateUpdated":"2025-03-12T14:31:38.012Z","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","shortName":"mitre"},"references":[{"url":"https://wiki.zimbra.com/wiki/Security_Center"},{"url":"https://wiki.zimbra.com/wiki/Zimbra_Releases/10.1.5#Security_Fixes"},{"url":"https://wiki.zimbra.com/wiki/Zimbra_Releases/10.0.13#Security_Fixes"},{"url":"https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P44#Security_Fixes"}]}},"cveMetadata":{"assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","assignerShortName":"mitre","cveId":"CVE-2025-27915","datePublished":"2025-03-12T00:00:00.000Z","dateReserved":"2025-03-10T00:00:00.000Z","dateUpdated":"2026-02-26T19:09:35.780Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"cna_checked":1794154800,"cve":"CVE-2025-27915","description":"An issue was discovered in Zimbra Collaboration (ZCS) 9.0 and 10.0 and 10.1. A stored cross-site scripting (XSS) vulnerability exists in the Classic Web Client due to insufficient sanitization of HTML content in ICS files. When a user views an e-mail message containing a malicious ICS entry, its embedded JavaScript executes via an ontoggle event inside a <details> tag. This allows an attacker to run arbitrary JavaScript within the victim's session, potentially leading to unauthorized actions such as setting e-mail filters to redirect messages to an attacker-controlled address. As a result, an attacker can perform unauthorized actions on the victim's account, including e-mail redirection and data exfiltration.","epss":{"date":"2026-11-12","epss":0.04064,"percentile":0.9081},"epss_checked":1794522003,"first_seen":1793665375,"kev":{"cveID":"CVE-2025-27915","cwes":["CWE-79"],"dateAdded":"2025-10-07","dueDate":"2025-10-28","forensicTriage":"No","knownRansomwareCampaignUse":"Unknown","notes":"https://wiki.zimbra.com/wiki/Security_Center ; https://nvd.nist.gov/vuln/detail/CVE-2025-27915","product":"Zimbra Collaboration Suite (ZCS)","requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","shortDescription":"Synacor Zimbra Collaboration Suite (ZCS) contains a cross-site scripting vulnerability that exists in the Classic Web Client due to insufficient sanitization of HTML content in ICS files. When a user views an e-mail message containing a malicious ICS entry, its embedded JavaScript executes via an ontoggle event inside a tag. This allows an attacker to run arbitrary JavaScript within the victim's session, potentially leading to unauthorized actions such as setting e-mail filters to redirect messages to an attacker-controlled address. As a result, an attacker can perform unauthorized actions on the victim's account, including e-mail redirection and data exfiltration.","vendorProject":"Synacor","vulnerabilityName":"Synacor Zimbra Collaboration Suite (ZCS) Cross-site Scripting Vulnerability"},"kev_checked":1794522003,"products":"n/a n/a","references":["https://wiki.zimbra.com/wiki/Security_Center","https://wiki.zimbra.com/wiki/Zimbra_Releases/10.1.5#Security_Fixes","https://wiki.zimbra.com/wiki/Zimbra_Releases/10.0.13#Security_Fixes","https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P44#Security_Fixes","https://strikeready.com/blog/0day-ics-attack-in-the-wild/","https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-27915"],"score":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.4,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","provider":"CISA-ADP","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"solutions":"","state":"PUBLISHED","title":"Synacor Zimbra Collaboration Suite (ZCS) Cross-site Scripting Vulnerability","updated_at":1794500401,"workarounds":""},"sources":[]}