CVE-2025-2849

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.30% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 22.9% of scored records. A rank, not a probability.

NVD base score

4.8 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS 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

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2025-03-27 13:31Z1 YR AGO

Last updated

2025-03-27 14:11Z1 YR AGO

Reserved

2025-03-27

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 4.8)

CNA CVSS 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

Weaknesses

• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass
• CWE-122Heap-based Buffer OverflowVariant
• CWE-787Out-of-bounds WriteBase

Data version

5.1

Document digest

bda3c6de2d5d73d48cb577eb96260ddd482cf5a95b93b5a7b8709b3563edc4de

• vuldb.comVDB-301494 | UPX p_lx_elf.cpp un_DT_INIT heap-based overflowhttps://vuldb.com/?id.301494vdb-entrytechnical-description
• vuldb.comVDB-301494 | CTI Indicators (IOB, IOC, IOA)https://vuldb.com/?ctiid.301494signaturepermissions-required
• vuldb.comSubmit #522371 | upx 5.0.0 Buffer Overflowhttps://vuldb.com/?submit.522371third-party-advisory
• github.comhttps://github.com/upx/upx/issues/898issue-tracking
• github.comhttps://github.com/upx/upx/issues/898#issuecomment-2734082143issue-tracking
• github.comhttps://github.com/user-attachments/files/19307868/input.zipexploit
• github.comhttps://github.com/upx/upx/commit/e0b6ff192412f5bb5364c1948f4f6b27a0cd5ea2patch