CVE-2026-4258

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.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• 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

0.25% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 16.0% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/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

Modified. NVD last modified this record on 2026-07-28.

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

2026-03-17 05:00Z5 MO AGO

Last updated

2026-08-07 15:25Z27 DAYS AGO

Reserved

2026-03-16

Assigning CNA

snyk

Record state

PUBLISHED

Severity

High (CVSS 8.7)

CNA CVSS vector

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

Weaknesses

• CWE-325Missing Cryptographic StepBase
• CWE-347Improper Verification of Cryptographic SignatureBase

Data version

5.2

Document digest

9cd716b994ec0ca6a1a399c3adc8e1377a5fbc0222465d65bd4c47b7b29efaae

• security.snyk.iohttps://security.snyk.io/vuln/SNYK-JS-SJCL-15369617
• security.snyk.iohttps://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-15751243
• gist.github.comhttps://gist.github.com/Kr0emer/2560f98edb10b0b34f2438cd63913c47
• github.comhttps://github.com/bitwiseshiftleft/sjcl/blob/master/core/ecc.js%23L454-L461
• github.comhttps://github.com/bitwiseshiftleft/sjcl/commit/ee307459972442a17beebc29dc331fffd8aff796