{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-32249", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-11T14:47:05.686Z", "datePublished": "2026-03-12T19:17:23.954Z", "dateUpdated": "2026-03-13T16:16:31.836Z"}, "containers": {"cna": {"title": "NFA regex engine NULL pointer dereference affects Vim < 9.2.0137", "problemTypes": [{"descriptions": [{"cweId": "CWE-476", "lang": "en", "description": "CWE-476: NULL Pointer Dereference", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L", "version": "3.1"}}], "references": [{"name": "https://github.com/vim/vim/security/advisories/GHSA-9phh-423r-778r", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/vim/vim/security/advisories/GHSA-9phh-423r-778r"}, {"name": "https://github.com/vim/vim/commit/36d6e87542cf823d833e451e09a90ee429899cec", "tags": ["x_refsource_MISC"], "url": "https://github.com/vim/vim/commit/36d6e87542cf823d833e451e09a90ee429899cec"}, {"name": "https://github.com/vim/vim/releases/tag/v9.2.0137", "tags": ["x_refsource_MISC"], "url": "https://github.com/vim/vim/releases/tag/v9.2.0137"}], "affected": [{"vendor": "vim", "product": "vim", "versions": [{"version": ">= 9.1.0011, < 9.2.0137", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-12T19:17:23.954Z"}, "descriptions": [{"lang": "en", "value": "Vim is an open source, command line text editor. From 9.1.0011 to before 9.2.0137, Vim's NFA regex compiler, when encountering a collection containing a combining character as the endpoint of a character range (e.g. [0-0\\u05bb]), incorrectly emits the composing bytes of that character as separate NFA states. This corrupts the NFA postfix stack, resulting in NFA_START_COLL having a NULL out1 pointer. When nfa_max_width() subsequently traverses the compiled NFA to estimate match width for the look-behind assertion, it dereferences state->out1->out without a NULL check, causing a segmentation fault. This vulnerability is fixed in 9.2.0137."}], "source": {"advisory": "GHSA-9phh-423r-778r", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-03-13T16:16:20.237064Z", "id": "CVE-2026-32249", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-13T16:16:31.836Z"}}]}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "Vim is an open source, command line text editor. From 9.1.0011 to before 9.2.0137, Vim's NFA regex compiler, when encountering a collection containing a combining character as the endpoint of a character range (e.g. [0-0\\u05bb]), incorrectly emits the composing bytes of that character as separate NFA states. This corrupts the NFA postfix stack, resulting in NFA_START_COLL having a NULL out1 pointer. When nfa_max_width() subsequently traverses the compiled NFA to estimate match width for the look-behind assertion, it dereferences state->out1->out without a NULL check, causing a segmentation fault. This vulnerability is fixed in 9.2.0137."}], "id": "CVE-2026-32249", "lastModified": "2026-03-12T21:07:53.427", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.4, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-03-12T20:16:05.523", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/vim/vim/commit/36d6e87542cf823d833e451e09a90ee429899cec"}, {"source": "security-advisories@github.com", "url": "https://github.com/vim/vim/releases/tag/v9.2.0137"}, {"source": "security-advisories@github.com", "url": "https://github.com/vim/vim/security/advisories/GHSA-9phh-423r-778r"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{"bugzilla": {"description": "vim: NFA regex engine NULL pointer dereference", "id": "2447110", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2447110"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["A flaw was found in Vim. A NULL pointer dereference can occur when the NFA regex compiler processes a specific character collection, more specifically one that contains a combining character acting as the endpoint of a character range (e.g., [0-0\\u05bb]). A process or user that can supply a regex pattern can cause an application crash, resulting in a denial of service."], "mitigation": {"lang": "en:us", "value": "To mitigate this vulnerability, disable the NFA (Non-deterministic Finite Automaton) regex engine and enable the traditional backtracking engine by adding the following option to the Vim configuration file:\n~~~\nset regexpengine=1\n~~~"}, "name": "CVE-2026-32249", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "vim", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "vim", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "vim", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "vim", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "vim", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-03-12T19:17:23Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-32249\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-32249\nhttps://github.com/vim/vim/commit/36d6e87542cf823d833e451e09a90ee429899cec\nhttps://github.com/vim/vim/releases/tag/v9.2.0137\nhttps://github.com/vim/vim/security/advisories/GHSA-9phh-423r-778r"], "statement": "To exploit this issue, an attacker needs to be able to supply a malicious regex pattern to be processed by the NFA regex compiler, including via plugins or command line arguments. Also, this flaw can cause an application crash, resulting only in a denial of service with no other security impact. Due to these reasons, this vulnerability has been rated with low severity.", "threat_severity": "Low"}