CVE-2025-2849 is a problematic heap-based buffer overflow vulnerability affecting UPX versions up to 5.0.0, specifically within the PackLinuxElf64::un_DT_INIT function in src/p_lx_elf.cpp. With a CVSS score of 5.5 (Medium), this vulnerability can be exploited locally with low attack complexity, requiring user interaction, and primarily impacts availability. While a public exploit has been disclosed, there is no evidence of active exploitation, and it lacks presence in common exploit frameworks or significant community discussion. A patch (e0b6ff192412f5bb5364c1948f4f6b27a0cd5ea2) is available to remediate this issue.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 5.0.0CPE matchmatch criteria | cpe:2.3:a:upx:upx:*:*:*:*:*:*:*:* |
CVSS version used by this source: 4.0
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
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.