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        "cveId": "CVE-2026-77219",
        "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "state": "PUBLISHED",
        "assignerShortName": "VulnCheck",
        "dateReserved": "2026-08-20T18:25:46.943Z",
        "datePublished": "2026-08-21T20:20:45.314Z",
        "dateUpdated": "2026-08-21T21:42:58.824Z"
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                "dateUpdated": "2026-08-21T20:20:45.314Z"
            },
            "title": "GNU Emacs < 31.0.91 Heap Over-Read via PBM/PPM/PGM Image Loader",
            "descriptions": [
                {
                    "lang": "en",
                    "value": "GNU Emacs before 31.0.91 contains an integer overflow in the PBM/PPM/PGM image loader that allows an attacker to leak heap memory contents by supplying a crafted image with large dimensions and an elevated max color index. The image loader multiplies image dimensions and channel count using signed integer arithmetic; for sufficiently large values, the result wraps to a negative number, bypassing the bounds check and causing the pixel reader to access heap memory past the end of the allocated buffer. The over-read contents are interpreted as pixel color values and rendered on screen."
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                "x_open-source"
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            "datePublic": "2026-07-01T00:00:00.000Z",
            "problemTypes": [
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                    "descriptions": [
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                            "lang": "en",
                            "cweId": "CWE-190",
                            "description": "Integer Overflow or Wraparound",
                            "type": "CWE"
                        },
                        {
                            "lang": "en",
                            "cweId": "CWE-125",
                            "description": "Out-of-bounds Read",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "defaultStatus": "affected",
                    "vendor": "GNU",
                    "product": "Emacs",
                    "packageURL": "pkg:github/emacs-mirror/emacs",
                    "repo": "https://github.com/emacs-mirror/emacs",
                    "versions": [
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                            "status": "affected",
                            "version": "0",
                            "versionType": "semver",
                            "lessThan": "31.0.91"
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                            "value": "GENERAL"
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                        "attackRequirements": "NONE",
                        "privilegesRequired": "NONE",
                        "userInteraction": "PASSIVE",
                        "vulnConfidentialityImpact": "HIGH",
                        "subConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "HIGH",
                        "subAvailabilityImpact": "NONE",
                        "exploitMaturity": "NOT_DEFINED",
                        "Safety": "NOT_DEFINED",
                        "Automatable": "NOT_DEFINED",
                        "Recovery": "NOT_DEFINED",
                        "valueDensity": "NOT_DEFINED",
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                        "baseSeverity": "MEDIUM",
                        "baseScore": 6.9,
                        "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N"
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                        "userInteraction": "REQUIRED",
                        "scope": "UNCHANGED",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "NONE",
                        "availabilityImpact": "HIGH",
                        "version": "3.1",
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                        "baseScore": 7.1,
                        "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H"
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                    "url": "https://debbugs.gnu.org/cgi/bugreport.cgi?bug=81344",
                    "name": "Bug Report",
                    "tags": [
                        "issue-tracking"
                    ]
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                    "url": "https://github.com/emacs-mirror/emacs/releases/tag/emacs-31.0.91",
                    "name": "Release Tag",
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                        "release-notes"
                    ]
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                {
                    "url": "https://github.com/emacs-mirror/emacs/commit/b07e634e4cf45162ae0178e32092b040587f2c6c",
                    "name": "Patch Commit",
                    "tags": [
                        "patch"
                    ]
                },
                {
                    "url": "https://www.vulncheck.com/advisories/gnu-emacs-heap-over-read-via-pbm-ppm-pgm-image-loader",
                    "tags": [
                        "third-party-advisory"
                    ]
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "Tristan Madani",
                    "type": "finder"
                }
            ],
            "source": {
                "discovery": "UNKNOWN"
            },
            "x_generator": {
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        "adp": [
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                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-08-21T21:32:45.496424Z",
                                "id": "CVE-2026-77219",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
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                                        "Automatable": "no"
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                                        "Technical Impact": "partial"
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                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
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                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
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