{"id":"CVE-2025-2849","aliases":["DEBIAN-CVE-2025-2849","EUVD-2025-8501","GHSA-jrx7-5cr9-c5v4","MGASA-2025-0122","UBUNTU-CVE-2025-2849","openSUSE-SU-2025:14947-1"],"status":"published","title":"UPX p_lx_elf.cpp un_DT_INIT heap-based overflow","description":"A vulnerability, which was classified as problematic, was found in UPX up to 5.0.0. Affected is the function PackLinuxElf64::un_DT_INIT of the file src/p_lx_elf.cpp. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. The patch is identified as e0b6ff192412f5bb5364c1948f4f6b27a0cd5ea2. It is recommended to apply a patch to fix this issue.","severity":{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00304,"percentile":0.2341,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-119","CWE-122","CWE-787"],"published":"2025-03-27T13:31:06Z","modified":"2026-10-28T10:58:54Z","fixes":[{"ecosystem":"Debian:13","package":"upx-ucl","fixed_in":["4.2.4-1.1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"upx-ucl","fixed_in":["4.2.4-1.1"],"sources":["osv"]},{"ecosystem":"Mageia:9","package":"upx","fixed_in":["4.2.3-1.1.mga9"],"sources":["osv"]},{"ecosystem":"openSUSE:Tumbleweed","package":"upx","fixed_in":["5.0.0-2.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:13","package":"upx-ucl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.2.4-1.1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"upx-ucl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.2.4-1.1"}]}]},{"source":"osv","ecosystem":"Mageia:9","package":"upx","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.2.3-1.1.mga9"}]}]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"upx-ucl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.91-1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"upx-ucl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.94-2","3.94-3","3.94-4"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"upx-ucl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.95-2","3.95-2build1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"upx-ucl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.96-2","3.96-3"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"upx-ucl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.96-3","4.2.2-3"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"upx-ucl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.2.4-1","4.2.4-1.1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"upx-ucl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.2.4-1.1build1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"upx-ucl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.2.4-1.1","4.2.4-1.1build1"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"upx","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.0.0-2.1"}]}]}],"products":[{"vendor":"upx","product":"upx"}],"references":[{"url":"https://vuldb.com/?id.301494","tags":["vdb-entry","technical-description","Third Party Advisory","VDB Entry","advisory","report"]},{"url":"https://vuldb.com/?ctiid.301494","tags":["signature","permissions-required","Permissions Required","VDB Entry","report"]},{"url":"https://vuldb.com/?submit.522371","tags":["third-party-advisory","Third Party Advisory","VDB Entry","advisory","report"]},{"url":"https://github.com/upx/upx/issues/898","tags":["issue-tracking","Exploit","Issue Tracking","report"]},{"url":"https://github.com/upx/upx/issues/898#issuecomment-2734082143","tags":["issue-tracking","exploit","Exploit","Issue Tracking","report"]},{"url":"https://github.com/user-attachments/files/19307868/input.zip","tags":["exploit","Product","evidence","report"]},{"url":"https://github.com/upx/upx/commit/e0b6ff192412f5bb5364c1948f4f6b27a0cd5ea2","tags":["patch","Patch","fix","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-2849","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-jrx7-5cr9-c5v4"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/2xxx/CVE-2025-2849.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2025-2849","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2025-0122.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=34157","tags":["report"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/message/4FBRFLGSEHNFULMPARVADU2TACHDQM4L/","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2025-2849","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-2849","tags":["report"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/4FBRFLGSEHNFULMPARVADU2TACHDQM4L/","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2025-2849","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2025-2849","title":"UPX p_lx_elf.cpp un_DT_INIT heap-based overflow","description":"A vulnerability, which was classified as problematic, was found in UPX up to 5.0.0. Affected is the function PackLinuxElf64::un_DT_INIT of the file src/p_lx_elf.cpp. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. The patch is identified as e0b6ff192412f5bb5364c1948f4f6b27a0cd5ea2. It is recommended to apply a patch to fix this issue.","status":"published","published":"2025-03-27T13:31:06.442Z","modified":"2025-03-27T14:11:39.541Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"},{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low","assessor":"cna"},{"version":"3.0","score":3.3,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low","assessor":"cna"},{"version":"2.0","score":1.7,"vector":"AV:L/AC:L/Au:S/C:N/I:N/A:P","assessor":"cna"}],"cwes":["CWE-122","CWE-119"],"updated_at":"2026-11-02T14:32:38.70481Z"}],"euvd":[{"id":"EUVD-2025-8501","description":"A vulnerability, which was classified as problematic, was found in UPX up to 5.0.0. Affected is the function PackLinuxElf64::un_DT_INIT of the file src/p_lx_elf.cpp. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. The patch is identified as e0b6ff192412f5bb5364c1948f4f6b27a0cd5ea2. It is recommended to apply a patch to fix this issue.","status":"published","published":"2025-03-27T13:31:06Z","modified":"2025-03-27T14:11:39Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T20:52:49.948923Z"}],"ghsa":[{"id":"GHSA-jrx7-5cr9-c5v4","title":"A vulnerability, which was classified as problematic, was found in UPX up to 5.0.0. Affected is...","description":"A vulnerability, which was classified as problematic, was found in UPX up to 5.0.0. Affected is the function PackLinuxElf64::un_DT_INIT of the file src/p_lx_elf.cpp. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. The patch is identified as e0b6ff192412f5bb5364c1948f4f6b27a0cd5ea2. It is recommended to apply a patch to fix this issue.","status":"published","published":"2025-03-27T15:31:09Z","modified":"2025-04-11T18:30:40Z","cvss":[{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low"},{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/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"}],"cwes":["CWE-119","CWE-787"],"updated_at":"2026-11-02T15:01:16.487496Z"}],"nvd":[{"id":"CVE-2025-2849","description":"A vulnerability, which was classified as problematic, was found in UPX up to 5.0.0. Affected is the function PackLinuxElf64::un_DT_INIT of the file src/p_lx_elf.cpp. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. The patch is identified as e0b6ff192412f5bb5364c1948f4f6b27a0cd5ea2. It is recommended to apply a patch to fix this issue.","status":"published","published":"2025-03-27T14:15:55.303Z","modified":"2026-06-17T09:07:43.647Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/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":3.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low","assessor":"secondary"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":1.7,"vector":"AV:L/AC:L/Au:S/C:N/I:N/A:P","level":"low","assessor":"secondary"}],"cwes":["CWE-119","CWE-122","CWE-787"],"updated_at":"2026-11-02T14:10:56.494516Z"}],"osv":[{"id":"CVE-2025-2849","title":"UPX p_lx_elf.cpp un_DT_INIT heap-based overflow","description":"A vulnerability, which was classified as problematic, was found in UPX up to 5.0.0. Affected is the function PackLinuxElf64::un_DT_INIT of the file src/p_lx_elf.cpp. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. The patch is identified as e0b6ff192412f5bb5364c1948f4f6b27a0cd5ea2. It is recommended to apply a patch to fix this issue.","status":"published","published":"2025-03-27T13:31:06.442Z","modified":"2026-10-28T10:58:54.218550099Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-119","CWE-122"],"updated_at":"2026-11-02T15:44:47.708311Z"},{"id":"DEBIAN-CVE-2025-2849","description":"A vulnerability, which was classified as problematic, was found in UPX up to 5.0.0. Affected is the function PackLinuxElf64::un_DT_INIT of the file src/p_lx_elf.cpp. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. The patch is identified as e0b6ff192412f5bb5364c1948f4f6b27a0cd5ea2. It is recommended to apply a patch to fix this issue.","status":"published","published":"2025-03-27T14:15:55.303Z","modified":"2026-09-01T20:05:45.475414264Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:45:45.870237Z"},{"id":"UBUNTU-CVE-2025-2849","description":"A vulnerability, which was classified as problematic, was found in UPX up to 5.0.0. Affected is the function PackLinuxElf64::un_DT_INIT of the file src/p_lx_elf.cpp. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. The patch is identified as e0b6ff192412f5bb5364c1948f4f6b27a0cd5ea2. It is recommended to apply a patch to fix this issue.","status":"published","published":"2025-03-27T14:15:00Z","modified":"2026-10-17T12:56:49.758723408Z","cvss":[{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"},{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T16:55:26.330196Z"},{"id":"MGASA-2025-0122","title":"Updated upx packages fix security vulnerability","description":"UPX p_lx_elf.cpp un_DT_INIT heap-based overflow. (CVE-2025-2849)\n","status":"published","published":"2025-04-02T21:53:23Z","modified":"2026-04-16T04:43:39.624612166Z","updated_at":"2026-11-02T15:49:43.178336Z"},{"id":"openSUSE-SU-2025:14947-1","title":"upx-5.0.0-2.1 on GA media","description":"These are all security issues fixed in the upx-5.0.0-2.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2025-03-31T00:00:00Z","modified":"2026-02-04T02:37:02.438891Z","updated_at":"2026-11-02T16:58:37.399567Z"}]}}