{"id":"CVE-2026-111125","aliases":["AZL-108257","DEBIAN-CVE-2026-111125","EUVD-2026-102356","GHSA-98rm-rv63-xf58","MGASA-2026-0567","UBUNTU-CVE-2026-111125"],"status":"published","title":"CFITSIO through 4.7.0 Heap Out-of-Bounds Read via HCOMPRESS input_nnybble","description":"CFITSIO through 4.7.0 contains a heap-based out-of-bounds read vulnerability in the HCOMPRESS tile decoder that allows attackers to read past the compressed tile buffer via input_nnybble in fits_hdecompress.c. Attackers can supply a crafted FITS file with ZCMPTYPE HCOMPRESS_1 declaring oversized tile geometry to crash applications calling fits_read_pix or disclose limited heap memory.","severity":{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00245,"percentile":0.15867,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2026-10-15T18:57:22Z","modified":"2026-11-05T05:36:30Z","affected":[{"source":"osv","ecosystem":"Azure Linux:3","package":"cfitsio","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"4.0.0-5"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"cfitsio","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.2.0-3","4.3.0-1","4.3.0-2","4.3.1-1","4.3.1-1.1","4.3.1-1.1~exp1","4.4.1-1","4.4.1-2","4.5.0-1","4.5.0-2","4.5.0-3","4.5.0-4","4.5.0-5","4.6.2-1","4.6.2-2","4.6.3-1","4.6.4-1","4.7.0-1","4.7.0-2"]},{"source":"osv","ecosystem":"Debian:13","package":"cfitsio","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.6.2-2","4.6.3-1","4.6.4-1","4.7.0-1","4.7.0-2"]},{"source":"osv","ecosystem":"Debian:14","package":"cfitsio","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.6.2-2","4.6.3-1","4.6.4-1","4.7.0-1","4.7.0-2"]},{"source":"osv","ecosystem":"Mageia:10","package":"cfitsio","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.7.0-1.mga10"}]}],"bundled":2},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"cfitsio","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.370-5"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"cfitsio","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.410-1","3.420-3","3.430-1","3.430-2"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"cfitsio","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.470-3"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"cfitsio","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.490-3","4.0.0-1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"cfitsio","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.2.0-3","4.3.0-2","4.3.1-1","4.3.1-1.1build1","4.3.1-1.1build2"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"cfitsio","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.6.3-1","4.6.4-1","4.7.0-2"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"cfitsio","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.6.2-2","4.6.3-1"]}],"products":[{"vendor":"heasarc","product":"cfitsio"},{"vendor":"nasa","product":"cfitsio"}],"references":[{"url":"https://hackmd.io/@haind-pwn/cfitsio-zdither0-dither-seed-oob-read","tags":["technical-description","exploit","Exploit","Mitigation","Third Party Advisory","evidence","report"]},{"url":"https://github.com/HEASARC/cfitsio/blob/d6d27653740864a0483e74cff23c53e34e1dceee/fits_hdecompress.c#L2575-L2633","tags":["technical-description","Product","article","report"]},{"url":"https://github.com/HEASARC/cfitsio/blob/d6d27653740864a0483e74cff23c53e34e1dceee/imcompress.c#L6310-L6316","tags":["technical-description","Product","article","report"]},{"url":"https://github.com/HEASARC/cfitsio","tags":["product","Product","package","web","report"]},{"url":"https://www.vulncheck.com/advisories/cfitsio-through-4.7.0-heap-out-of-bounds-read-via-hcompress-input-nnybble","tags":["third-party-advisory","Third Party Advisory","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-111125","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-98rm-rv63-xf58"},{"url":"https://github.com","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111125.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-111125","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2026-0567.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=36537","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-111125","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-111125","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-111125","title":"CFITSIO through 4.7.0 Heap Out-of-Bounds Read via HCOMPRESS input_nnybble","description":"CFITSIO through 4.7.0 contains a heap-based out-of-bounds read vulnerability in the HCOMPRESS tile decoder that allows attackers to read past the compressed tile buffer via input_nnybble in fits_hdecompress.c. Attackers can supply a crafted FITS file with ZCMPTYPE HCOMPRESS_1 declaring oversized tile geometry to crash applications calling fits_read_pix or disclose limited heap memory.","status":"published","published":"2026-10-15T18:57:22.035Z","modified":"2026-10-21T01:15:29.785Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"},{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:20:15.34316Z"}],"euvd":[{"id":"EUVD-2026-102356","description":"CFITSIO through 4.7.0 contains a heap-based out-of-bounds read vulnerability in the HCOMPRESS tile decoder that allows attackers to read past the compressed tile buffer via input_nnybble in fits_hdecompress.c. Attackers can supply a crafted FITS file with ZCMPTYPE HCOMPRESS_1 declaring oversized tile geometry to crash applications calling fits_read_pix or disclose limited heap memory.","status":"published","published":"2026-10-15T18:57:22Z","modified":"2026-10-21T01:15:29Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T16:59:40.989797Z"}],"ghsa":[{"id":"GHSA-98rm-rv63-xf58","title":"CFITSIO through 4.7.0 contains a heap-based out-of-bounds read vulnerability in the HCOMPRESS...","description":"CFITSIO through 4.7.0 contains a heap-based out-of-bounds read vulnerability in the HCOMPRESS tile decoder that allows attackers to read past the compressed tile buffer via input_nnybble in fits_hdecompress.c. Attackers can supply a crafted FITS file with ZCMPTYPE HCOMPRESS_1 declaring oversized tile geometry to crash applications calling fits_read_pix or disclose limited heap memory.","status":"published","published":"2026-10-15T21:36:03Z","modified":"2026-10-15T21:36:11Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"},{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:13:49.297576Z"}],"nvd":[{"id":"CVE-2026-111125","description":"CFITSIO through 4.7.0 contains a heap-based out-of-bounds read vulnerability in the HCOMPRESS tile decoder that allows attackers to read past the compressed tile buffer via input_nnybble in fits_hdecompress.c. Attackers can supply a crafted FITS file with ZCMPTYPE HCOMPRESS_1 declaring oversized tile geometry to crash applications calling fits_read_pix or disclose limited heap memory.","status":"published","published":"2026-10-15T19:17:25.78Z","modified":"2026-10-21T02:17:03.647Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:12:59.751798Z"}],"osv":[{"id":"CVE-2026-111125","title":"CFITSIO through 4.7.0 Heap Out-of-Bounds Read via HCOMPRESS input_nnybble","description":"CFITSIO through 4.7.0 contains a heap-based out-of-bounds read vulnerability in the HCOMPRESS tile decoder that allows attackers to read past the compressed tile buffer via input_nnybble in fits_hdecompress.c. Attackers can supply a crafted FITS file with ZCMPTYPE HCOMPRESS_1 declaring oversized tile geometry to crash applications calling fits_read_pix or disclose limited heap memory.","status":"published","published":"2026-10-15T18:57:22.035Z","modified":"2026-10-28T02:30:29.024125922Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:44:55.61515Z"},{"id":"DEBIAN-CVE-2026-111125","description":"CFITSIO through 4.7.0 contains a heap-based out-of-bounds read vulnerability in the HCOMPRESS tile decoder that allows attackers to read past the compressed tile buffer via input_nnybble in fits_hdecompress.c. Attackers can supply a crafted FITS file with ZCMPTYPE HCOMPRESS_1 declaring oversized tile geometry to crash applications calling fits_read_pix or disclose limited heap memory.","status":"published","published":"2026-10-15T19:17:25.78Z","modified":"2026-10-23T18:05:32.1001952Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:49.824149Z"},{"id":"UBUNTU-CVE-2026-111125","description":"CFITSIO through 4.7.0 contains a heap-based out-of-bounds read vulnerability in the HCOMPRESS tile decoder that allows attackers to read past the compressed tile buffer via input_nnybble in fits_hdecompress.c. Attackers can supply a crafted FITS file with ZCMPTYPE HCOMPRESS_1 declaring oversized tile geometry to crash applications calling fits_read_pix or disclose limited heap memory.","status":"published","published":"2026-10-15T19:17:00Z","modified":"2026-10-28T17:50:35Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"medium"},{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H","level":"high"},{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T16:55:59.591851Z"},{"id":"AZL-108257","title":"CVE-2026-111125 affecting package cfitsio 4.0.0-5","description":"CFITSIO through 4.7.0 contains a heap-based out-of-bounds read vulnerability in the HCOMPRESS tile decoder that allows attackers to read past the compressed tile buffer via input_nnybble in fits_hdecompress.c. Attackers can supply a crafted FITS file with ZCMPTYPE HCOMPRESS_1 declaring oversized tile geometry to crash applications calling fits_read_pix or disclose limited heap memory.","status":"published","published":"2026-10-15T19:17:25Z","modified":"2026-11-05T05:36:30Z","updated_at":"2026-11-05T16:41:18.199293Z"},{"id":"MGASA-2026-0567","title":"Updated cfitsio package fixes security vulnerabilities","description":"CFITSIO through 4.7.0 contains a heap-based out-of-bounds read\nvulnerability in the imcompress.c unquantize helpers that allows\nattackers to read memory before the fits_rand_value table via a zero or\nnegative ZDITHER0 seed. Attackers can supply a crafted FITS file with a\nSUBTRACTIVE_DITHER_1 compressed image, read through fits_open_file() and\nfits_read_pix(), to cause crashes or leak heap contents in decoded\npixels.\n","status":"published","published":"2026-10-30T01:10:00Z","modified":"2026-10-30T01:15:03.692203384Z","updated_at":"2026-11-02T15:49:43.795591Z"}]}}