SUSE-SU-2026:21396-1

Vulnerability from csaf_suse - Published: 2026-04-29 11:20 - Updated: 2026-04-29 11:20
Summary
Security update for libssh
Severity
Moderate
Notes
Title of the patch: Security update for libssh
Description of the patch: This update for libssh fixes the following issues: - Update to version 0.11.4: - CVE-2026-0964: SCP Protocol Path Traversal in ssh_scp_pull_request() (bsc#1258049) - CVE-2026-0965: Possible Denial of Service when parsing unexpected configuration files (bsc#1258045) - CVE-2026-0966: Buffer underflow in ssh_get_hexa() on invalid input (bsc#1258054) - CVE-2026-0967: Specially crafted patterns could cause DoS (bsc#1258081) - CVE-2026-0968: OOB Read in sftp_parse_longname() (bsc#1258080) - CVE-2025-8114: Fix NULL pointer dereference after allocation failure (bsc#1246974) - CVE-2025-8277: Fix memory leak of ephemeral key pair during repeated wrong KEX (bsc#1249375)
Patchnames: SUSE-SL-Micro-6.2-655
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
CVE-2025-8114
4.7 (Medium)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
CVE-2025-8277
3.1 (Low)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
CVE-2026-0964
5 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
CVE-2026-0965
3.3 (Low)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
CVE-2026-0966
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
CVE-2026-0967
2.2 (Low)
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L
Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
CVE-2026-0968
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:L
Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
References
https://www.suse.com/support/security/rating/ external
https://ftp.suse.com/pub/projects/security/csaf/s… self
https://www.suse.com/support/update/announcement/… self
https://lists.suse.com/pipermail/sle-updates/2026… self
https://bugzilla.suse.com/1246974 self
https://bugzilla.suse.com/1249375 self
https://bugzilla.suse.com/1258045 self
https://bugzilla.suse.com/1258049 self
https://bugzilla.suse.com/1258054 self
https://bugzilla.suse.com/1258080 self
https://bugzilla.suse.com/1258081 self
https://www.suse.com/security/cve/CVE-2025-8114/ self
https://www.suse.com/security/cve/CVE-2025-8277/ self
https://www.suse.com/security/cve/CVE-2026-0964/ self
https://www.suse.com/security/cve/CVE-2026-0965/ self
https://www.suse.com/security/cve/CVE-2026-0966/ self
https://www.suse.com/security/cve/CVE-2026-0967/ self
https://www.suse.com/security/cve/CVE-2026-0968/ self
https://www.suse.com/security/cve/CVE-2025-8114 external
https://bugzilla.suse.com/1246974 external
https://www.suse.com/security/cve/CVE-2025-8277 external
https://bugzilla.suse.com/1249375 external
https://www.suse.com/security/cve/CVE-2026-0964 external
https://bugzilla.suse.com/1258049 external
https://www.suse.com/security/cve/CVE-2026-0965 external
https://bugzilla.suse.com/1258045 external
https://www.suse.com/security/cve/CVE-2026-0966 external
https://bugzilla.suse.com/1258054 external
https://www.suse.com/security/cve/CVE-2026-0967 external
https://bugzilla.suse.com/1258081 external
https://www.suse.com/security/cve/CVE-2026-0968 external
https://bugzilla.suse.com/1258080 external
To clipboard 

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          "text": "https://www.suse.com/security/cve/CVE-2025-8114"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "A flaw was found in libssh, a library that implements the SSH protocol. When calculating the session ID during the key exchange (KEX) process, an allocation failure in cryptographic functions may lead to a NULL pointer dereference. This issue can cause the client or server to crash.",
          "title": "CVE description"
        }
      ],
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          "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.s390x",
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        ]
      },
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        },
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          "url": "https://bugzilla.suse.com/1246974"
        }
      ],
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          "product_ids": [
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            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.x86_64"
          ]
        }
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            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
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            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.s390x",
            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.x86_64"
          ]
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          "date": "2026-04-29T11:20:23Z",
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          "text": "https://www.suse.com/security/cve/CVE-2025-8277"
        }
      ],
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        {
          "category": "general",
          "text": "A flaw was found in libssh\u0027s handling of key exchange (KEX) processes when a client repeatedly sends incorrect KEX guesses. The library fails to free memory during these rekey operations, which can gradually exhaust system memory. This issue can lead to crashes on the client side, particularly when using libgcrypt, which impacts application stability and availability.",
          "title": "CVE description"
        }
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          "url": "https://www.suse.com/security/cve/CVE-2025-8277"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1249375 for CVE-2025-8277",
          "url": "https://bugzilla.suse.com/1249375"
        }
      ],
      "remediations": [
        {
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          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
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            "SUSE Linux Micro 6.2:libssh-config-0.11.4-160000.1.1.noarch",
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            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.s390x",
            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.x86_64"
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      "scores": [
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            "baseSeverity": "LOW",
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            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.s390x",
            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.x86_64"
          ]
        }
      ],
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          "date": "2026-04-29T11:20:23Z",
          "details": "low"
        }
      ],
      "title": "CVE-2025-8277"
    },
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          "text": "https://www.suse.com/security/cve/CVE-2026-0964"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "A malicious SCP server can send unexpected paths that could make the\nclient application override local files outside of working directory.\nThis could be misused to create malicious executable or configuration\nfiles and make the user execute them under specific consequences.\n\nThis is the same issue as in OpenSSH, tracked as CVE-2019-6111.",
          "title": "CVE description"
        }
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          "summary": "CVE-2026-0964",
          "url": "https://www.suse.com/security/cve/CVE-2026-0964"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1258049 for CVE-2026-0964",
          "url": "https://bugzilla.suse.com/1258049"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
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            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.s390x",
            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.x86_64"
          ]
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      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 5,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Micro 6.2:libssh-config-0.11.4-160000.1.1.noarch",
            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.aarch64",
            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.s390x",
            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-04-29T11:20:23Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2026-0964"
    },
    {
      "cve": "CVE-2026-0965",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2026-0965"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "A flaw was found in libssh where it can attempt to open arbitrary files during configuration parsing. A local attacker can exploit this by providing a malicious configuration file or when the system is misconfigured. This vulnerability could lead to a Denial of Service (DoS) by causing the system to try and access dangerous files, such as block devices or large system files, which can disrupt normal operations.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Micro 6.2:libssh-config-0.11.4-160000.1.1.noarch",
          "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.aarch64",
          "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.s390x",
          "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2026-0965",
          "url": "https://www.suse.com/security/cve/CVE-2026-0965"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1258045 for CVE-2026-0965",
          "url": "https://bugzilla.suse.com/1258045"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Micro 6.2:libssh-config-0.11.4-160000.1.1.noarch",
            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.aarch64",
            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.s390x",
            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 3.3,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Micro 6.2:libssh-config-0.11.4-160000.1.1.noarch",
            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.aarch64",
            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.s390x",
            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-04-29T11:20:23Z",
          "details": "low"
        }
      ],
      "title": "CVE-2026-0965"
    },
    {
      "cve": "CVE-2026-0966",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2026-0966"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "The API function `ssh_get_hexa()` is vulnerable, when 0-lenght\ninput is provided to this function. This function is used internally\nin `ssh_get_fingerprint_hash()` and `ssh_print_hexa()` (deprecated),\nwhich is vulnerable to the same input (length is provided by the\ncalling application).\n\nThe function is also used internally in the gssapi code for logging\nthe OIDs received by the server during GSSAPI authentication. This\ncould be triggered remotely, when the server allows GSSAPI authentication\nand logging verbosity is set at least to SSH_LOG_PACKET (3). This\ncould cause self-DoS of the per-connection daemon process.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Micro 6.2:libssh-config-0.11.4-160000.1.1.noarch",
          "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.aarch64",
          "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.s390x",
          "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2026-0966",
          "url": "https://www.suse.com/security/cve/CVE-2026-0966"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1258054 for CVE-2026-0966",
          "url": "https://bugzilla.suse.com/1258054"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Micro 6.2:libssh-config-0.11.4-160000.1.1.noarch",
            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.aarch64",
            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.s390x",
            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Micro 6.2:libssh-config-0.11.4-160000.1.1.noarch",
            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.aarch64",
            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.s390x",
            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-04-29T11:20:23Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2026-0966"
    },
    {
      "cve": "CVE-2026-0967",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2026-0967"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "A flaw was found in libssh. A remote attacker, by controlling client configuration files or known_hosts files, could craft specific hostnames that when processed by the `match_pattern()` function can lead to inefficient regular expression backtracking. This can cause timeouts and resource exhaustion, resulting in a Denial of Service (DoS) for the client.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Micro 6.2:libssh-config-0.11.4-160000.1.1.noarch",
          "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.aarch64",
          "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.s390x",
          "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2026-0967",
          "url": "https://www.suse.com/security/cve/CVE-2026-0967"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1258081 for CVE-2026-0967",
          "url": "https://bugzilla.suse.com/1258081"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Micro 6.2:libssh-config-0.11.4-160000.1.1.noarch",
            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.aarch64",
            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.s390x",
            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 2.2,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Micro 6.2:libssh-config-0.11.4-160000.1.1.noarch",
            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.aarch64",
            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.s390x",
            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-04-29T11:20:23Z",
          "details": "low"
        }
      ],
      "title": "CVE-2026-0967"
    },
    {
      "cve": "CVE-2026-0968",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2026-0968"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "A flaw was found in libssh in which a malicious SFTP (SSH File Transfer Protocol) server can exploit this by sending a malformed \u0027longname\u0027 field within an `SSH_FXP_NAME` message during a file listing operation. This missing null check can lead to reading beyond allocated memory on the heap. This can cause unexpected behavior or lead to a denial of service (DoS) due to application crashes.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Micro 6.2:libssh-config-0.11.4-160000.1.1.noarch",
          "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.aarch64",
          "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.s390x",
          "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2026-0968",
          "url": "https://www.suse.com/security/cve/CVE-2026-0968"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1258080 for CVE-2026-0968",
          "url": "https://bugzilla.suse.com/1258080"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Micro 6.2:libssh-config-0.11.4-160000.1.1.noarch",
            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.aarch64",
            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.s390x",
            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 3.7,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:L",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Micro 6.2:libssh-config-0.11.4-160000.1.1.noarch",
            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.aarch64",
            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.s390x",
            "SUSE Linux Micro 6.2:libssh4-0.11.4-160000.1.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-04-29T11:20:23Z",
          "details": "low"
        }
      ],
      "title": "CVE-2026-0968"
    }
  ]
}


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Tags
Taxonomy of the tags.




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

Author Source Type Date Other

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.



Detection rules are retrieved from Rulezet.