TI-2025-02487 Aliases CVE-2025-2849 GHSA-jrx7-5cr9-c5v4

UPX p_lx_elf.cpp un_DT_INIT heap-based overflow

MEDIUM 55CWE-119Published 2025-03-27 · Updated 2025-03-27

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: —
Confidentiality · integrity · availability: None · None · Low
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00304 23rd percentileScored 2026-11-07

Public exploit Yes 3 exploit referencesTagged by NVD and the CNA

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	UPX	5.0	—	No fix listed	CNA

UPX Vendor— Affected 5.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:upx:upx::::::::	up to 5.0.0	Vulnerable	Upx

cpe:2.3:a:upx:upx:*:*:*:*:*:*:*:* Versions up to 5.0.0 Vulnerable ·Upx

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product

Red Hat

Timeline

2026-10-02 Threatist record created from CVE-2025-2849
2026-10-03 Alias added: GHSA-jrx7-5cr9-c5v4

References

Exploit 3

Patch 1

https://github.com/upx/upx/commit/e0b6ff192412f5bb5364c1948f4f6b27a0cd5ea2

TI-2021-19310 Memory corruption in upx CVSS 3.1HIGH 7.5
TI-2021-19309 Memory corruption in upx CVSS 3.1HIGH 7.5
TI-2021-19308 Memory corruption in upx CVSS 3.1HIGH 7.5
TI-2021-19307 Memory corruption in upx CVSS 3.1HIGH 7.5
TI-2021-19306 Memory corruption in upx CVSS 3.1HIGH 7.5
TI-2021-19305 Memory corruption in upx CVSS 3.1HIGH 7.5

See all 34 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences