CVE-2026-20889

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A specially crafted malicious file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability."}], "id": "CVE-2026-20889", "lastModified": "2026-07-15T02:18:24.360", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "talos-cna@cisco.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 5.9, "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-20889", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-04-07T00:00:00+00:00", "version": "2.0.3"}}]}, "published": "2026-04-07T15:17:35.300", "references": [{"source": "talos-cna@cisco.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2026-2358"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2026-2358"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:13284"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:14224"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:14655"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:14673"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/security/cve/CVE-2026-20889"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2455942"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-20889.json"}], "sourceIdentifier": "talos-cna@cisco.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-190"}], "source": "talos-cna@cisco.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-120"}], "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "type": "Secondary"}]}

{"bugzilla": {"description": "LibRaw: LibRaw: Arbitrary code execution via specially crafted image file", "id": "2455942", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2455942"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-120", "details": ["A flaw was found in LibRaw, a library used for processing raw image files. This vulnerability, a heap-based buffer overflow, exists within the x3f_thumb_loader functionality. A remote attacker could exploit this by tricking a user into opening a specially crafted malicious file. Successful exploitation could lead to arbitrary code execution, giving the attacker full control over the affected system."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2026-20889", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "libraw1394", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "LibRaw", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "libraw1394", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "LibRaw", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "libraw1394", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "LibRaw", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-04-07T13:49:27Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-20889\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-20889\nhttps://talosintelligence.com/vulnerability_reports/TALOS-2026-2358"], "statement": "LibRaw is not installed by default on Red Hat systems. A user would need to manually install and make available an affected code path for this vulnerability to be exploitable.", "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "Commit d20315b"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "LibRaw", "source": "cna", "vendor": "LibRaw"}, "product": "libraw", "vendor": "libraw"}], "analysis": {"en": {"generated_at": "2026-04-10T23:09:04.971246+00:00", "value": {"mitigation_remediation": ["Apply the vendor patch or update LibRaw to a version that includes the fix (e.g., any release newer than 0.22.0).", "Temporarily avoid processing untrusted image files with LibRaw until the patch is applied.", "Verify that applications using LibRaw do not accept user-supplied files from untrusted sources or implement input validation."], "summary": {"action": "Patch Immediately", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "The vulnerability affects LibRaw version 0.22.0 and earlier releases that contain the same commit. Applications that use LibRaw to process X3F images, such as photo editors, imaging tools, and other software that imports this format, are vulnerable when handling files from untrusted sources.", "description_and_impact": "A heap-based buffer overflow exists in LibRaw's x3f_thumb_loader functionality. A maliciously crafted image file can trigger an overflow that allows an attacker to execute arbitrary code within the context of the application that uses LibRaw. The flaw is classified under CWE-120 and CWE-190, indicating a vulnerability that involves improper memory handling and signed integer issues.", "risk_and_exploitability": "The CVSS score of 9.8 marks this issue as critical, while the EPSS score of less than 1% points to a currently low probability of exploitation. The likely attack vector is local file processing; however, if an application that incorporates LibRaw accepts uploaded images over a network, remote exploitation becomes possible. The vulnerability is not listed in the CISA KEV catalog, so no known widespread exploitation is documented."}}}}, "created": "2026-04-08T19:37:53.612922+00:00", "updated": "2026-04-13T14:27:11.864482+00:00", "vendors": ["libraw", "libraw$PRODUCT$libraw"]}