CVE-2026-90803

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

0.20% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 9.8% of scored records. A rank, not a probability.

NVD base score

1.9 (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:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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 2026-09-18.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

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

2026-09-14 16:45Z1 MO AGO

Last updated

2026-09-14 17:15Z1 MO AGO

Reserved

2026-09-13

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:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Weaknesses

• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass
• CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')Base
• CWE-805Buffer Access with Incorrect Length ValueBase

Data version

5.2

Document digest

8f2251540a09b78cc0986f40e6867d7d41fb1d852f7ef4b5557b878f1796c89a

• vuldb.comVDB-403305 | GNU Binutils ld elf64-x86-64.c elf_x86_64_relocate_section buffer overflowhttps://vuldb.com/vuln/403305vdb-entrytechnical-description
• vuldb.comVDB-403305 | CTI Indicators (IOB, IOC, IOA)https://vuldb.com/vuln/403305/ctisignaturepermissions-required
• vuldb.comCVE-2026-90803 | CVE Analysis and Reporthttps://vuldb.com/cve/CVE-2026-90803third-party-advisory
• vuldb.comSubmit #920280 | GNU Binutils 2.47 (version date 20260726) Heap-based Buffer Overflowhttps://vuldb.com/submit/920280third-party-advisory
• sourceware.orghttps://sourceware.org/bugzilla/show_bug.cgi?id=34444issue-tracking
• github.comhttps://github.com/r1ck9-2q/cve_summit/blob/main/Heap%20OOB%20readwrite%20and%20SEGV%20in%20%60elf_x86_64_relocate_section%60%20(bfdelf64-x86-64.c4530%20%204835)%20via%20malformed%20relocation.mdexploit
• sourceware.orghttps://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=471130b39c03623ec6d78ece377ff4da3f6bfe7bpatch
• www.gnu.orghttps://www.gnu.org/broken-linkproduct