CVE-2026-7770 (GCVE-0-2026-7770)

Vulnerability from cvelistv5 – Published: 2026-06-01 17:45 – Updated: 2026-06-01 17:45
VLAI
Title
IBM i Access Client Solutions (ACS) is vulnerable to remote code execution when configured to listen for requests from IBM i Navigator
Summary
IBM i Access Family 1.1.5.0 through 1.1.9.12 IBM i Access Client Solutions (ACS) is vulnerable to remote code execution when configured to listen for requests from IBM i Navigator.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-74 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
Assigner
ibm
References
URL Tags
https://www.ibm.com/support/pages/node/7274214 vendor-advisorypatch
Impacted products
Vendor Product Version
IBM i Access Family Affected: 1.1.5.0 , ≤ 1.1.9.12 (semver)
    cpe:2.3:a:ibm:i_access_family:1.1.5.0:*:*:*:*:*:*:*
    cpe:2.3:a:ibm:i_access_family:1.1.9.12:*:*:*:*:*:*:*
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{
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      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:ibm:i_access_family:1.1.5.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:i_access_family:1.1.9.12:*:*:*:*:*:*:*"
          ],
          "product": "i Access Family",
          "vendor": "IBM",
          "versions": [
            {
              "lessThanOrEqual": "1.1.9.12",
              "status": "affected",
              "version": "1.1.5.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
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            }
          ],
          "value": "IBM i Access Family 1.1.5.0 through 1.1.9.12 IBM i Access Client Solutions (ACS) is vulnerable to remote code execution when configured to listen for requests from IBM i Navigator."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
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      ],
      "problemTypes": [
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          "descriptions": [
            {
              "cweId": "CWE-74",
              "description": "CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component (\u0027Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-01T17:45:00.983Z",
        "orgId": "9a959283-ebb5-44b6-b705-dcc2bbced522",
        "shortName": "ibm"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory",
            "patch"
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          "url": "https://www.ibm.com/support/pages/node/7274214"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eThe issue can be fixed by upgrading to version 1.1.9.13 or later.\u00a0 \u00a0See \u003ca href=\"https://www.ibm.com/support/pages/ibm-i-access-client-solutions-5733xj1\" rel=\"nofollow\"\u003eIBM i Access Client Solutions updates\u003c/a\u003e for the latest version available.\u003c/p\u003e\u003cdiv\u003e\u003cdiv\u003e\u003ctable\u003e\u003ccolgroup\u003e\u003ccol/\u003e\u003ccol/\u003e\u003ccol/\u003e\u003c/colgroup\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd\u003eProduct(s)\u003c/td\u003e\u003ctd\u003eVersion(s)\u003c/td\u003e\u003ctd\u003eRemediation/Fix/Instructions\u00a0\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003eIBM i Access Client Solutions\u003c/td\u003e\u003ctd\u003e1.1.5.0 - 1.1.9.12\u003c/td\u003e\u003ctd\u003e\u003cp\u003eThere are three ways to obtain the current version of IBM i Access Client Solutions:\u003c/p\u003e\u003cp\u003e1) IBM i Access Client Solutions is available at \u003ca href=\"https://www.ibm.com/resources/mrs/assets?source=swg-ia\" rel=\"nofollow\"\u003eDownloads.\u003c/a\u003e\u003c/p\u003e\u003cp\u003e2) IBM i Access Client Solutions can be downloaded from the general IBM i software site at\u00a0\u003ca href=\"https://www.ibm.com/servers/eserver/ess/landing/index.html\" rel=\"nofollow\"\u003eEntitled Systems Support (ESS)\u003c/a\u003e.\u00a0\u00a0\u003c/p\u003e\u003cul\u003e\u003cli\u003eAvailable from ESS starting May 29, 2026.\u00a0\u003c/li\u003e\u003c/ul\u003e\u003cp\u003e3) IBM i Access Client Solutions is available by applying a PTF to IBM i.\u00a0 \u00a0\u003c/p\u003e\u003cdiv\u003e\u003cdiv\u003e\u003ctable\u003e\u003ccolgroup\u003e\u003ccol/\u003e\u003ccol/\u003e\u003ccol/\u003e\u003c/colgroup\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd\u003eIBM i Release\u003c/td\u003e\u003ctd\u003e5770-SS1\u003cbr/\u003ePTF Number(s)\u003c/td\u003e\u003ctd\u003ePTF Download Link(s)\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003e7.6\u003c/td\u003e\u003ctd\u003eSJ09731\u003c/td\u003e\u003ctd\u003e\u003ca href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ09731\" rel=\"nofollow\"\u003ehttps://www.ibm.com/mysupport/s/fix-information?legacy=SJ09731\u003c/a\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003e7.5\u003c/td\u003e\u003ctd\u003eSJ09729\u003c/td\u003e\u003ctd\u003e\u003ca href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ09729\" rel=\"nofollow\"\u003ehttps://www.ibm.com/mysupport/s/fix-information?legacy=SJ09729\u003c/a\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003e7.4\u003c/td\u003e\u003ctd\u003eSJ09730\u003c/td\u003e\u003ctd\u003e\u003ca href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ09730\" rel=\"nofollow\"\u003ehttps://www.ibm.com/mysupport/s/fix-information?legacy=SJ09730\u003c/a\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003e7.3\u003c/td\u003e\u003ctd\u003eSJ09732\u003c/td\u003e\u003ctd\u003e\u003ca href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ09732\" rel=\"nofollow\"\u003ehttps://www.ibm.com/mysupport/s/fix-information?legacy=SJ09732\u003c/a\u003e\u003c/td\u003e\u003c/tr\u003e\u003c/tbody\u003e\u003c/table\u003e\u003c/div\u003e\u003c/div\u003e\u003cp\u003e\u003c/p\u003e\u003c/td\u003e\u003c/tr\u003e\u003c/tbody\u003e\u003c/table\u003e\u003c/div\u003e\u003c/div\u003e\u003cp\u003e\u003c/p\u003e"
            }
          ],
          "value": "The issue can be fixed by upgrading to version 1.1.9.13 or later.\u00a0 \u00a0See  https://www.ibm.com/mysupport/s/fix-information?legacy=SJ09731 7.5SJ09729 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ09729 7.4SJ09730 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ09730 7.3SJ09732 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ09732"
        }
      ],
      "title": "IBM i Access Client Solutions (ACS) is vulnerable to remote code execution when configured to listen for requests from IBM i Navigator",
      "x_generator": {
        "engine": "ibm-cvegen"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9a959283-ebb5-44b6-b705-dcc2bbced522",
    "assignerShortName": "ibm",
    "cveId": "CVE-2026-7770",
    "datePublished": "2026-06-01T17:45:00.983Z",
    "dateReserved": "2026-05-04T14:12:38.595Z",
    "dateUpdated": "2026-06-01T17:45:00.983Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-7770\",\"sourceIdentifier\":\"psirt@us.ibm.com\",\"published\":\"2026-06-01T19:16:54.773\",\"lastModified\":\"2026-06-01T19:16:54.773\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"IBM i Access Family 1.1.5.0 through 1.1.9.12 IBM i Access Client Solutions (ACS) is vulnerable to remote code execution when configured to listen for requests from IBM i Navigator.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"psirt@us.ibm.com\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":8.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"psirt@us.ibm.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-74\"}]}],\"references\":[{\"url\":\"https://www.ibm.com/support/pages/node/7274214\",\"source\":\"psirt@us.ibm.com\"}]}}"
  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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