CVE-2026-8784

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

0.16% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 5.4% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:H/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

Deferred. 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

2026-05-18 02:30Z3 MO AGO

Last updated

2026-05-18 12:24Z3 MO AGO

Reserved

2026-05-17

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 4.6)

CNA CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Weaknesses

• CWE-59Improper Link Resolution Before File Access ('Link Following')Base
• CWE-61UNIX Symbolic Link (Symlink) FollowingCompound

Data version

5.2

Document digest

bfbc3d42aa3a17f57a716b6b89c171b677eaf060c5691881dcce5e4271960639

• vuldb.comVDB-364408 | npitre cramfs-tools cramfsck.c change_file_status symlinkhttps://vuldb.com/vuln/364408vdb-entrytechnical-description
• vuldb.comVDB-364408 | CTI Indicators (IOB, IOC, IOA)https://vuldb.com/vuln/364408/ctisignaturepermissions-required
• vuldb.comSubmit #811897 | GNU cramfs-tools below v2.2 Symlink Followinghttps://vuldb.com/submit/811897third-party-advisory
• github.comhttps://github.com/npitre/cramfs-tools/issues/13exploitissue-tracking
• github.comhttps://github.com/npitre/cramfs-tools/issues/13#issuecomment-4306102583issue-tracking
• github.comhttps://github.com/npitre/cramfs-tools/commit/b4a3a695c9873f824907bd15659f2a6ac7667b4fpatch
• github.comhttps://github.com/npitre/cramfs-tools/product