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CVE-2020-14967

32
FAUCET Score

CVE-2020-14967 is a critical vulnerability affecting the jsrsasign package (versions prior to 8.0.18) for Node.js, as well as related NetApp products. It stems from an RSA PKCS1 v1.5 decryption flaw that fails to detect ciphertext modification, specifically the prepending of null bytes. This allows an attacker to potentially trigger memory corruption issues. With a CVSS score of 9.8, this vulnerability is highly severe, requiring no user interaction or privileges, and can lead to complete compromise of confidentiality, integrity, and availability. Despite its critical severity, there is currently no public exploit code (Metasploit, Nuclei, ExploitDB) or evidence of active exploitation, and it has received no community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 8.0.18CPE matchmatch criteria
cpe:2.3:a:kjur:jsrsasign:*:*:*:*:*:node.js:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:max_data:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.59%
Probability of exploitation in next 30 days
EPSS Percentile
83.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0259 is in the 74th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

npmpatch availablevia ghsa
Product: jsrsasignFixed in: 8.0.18

Vendor Advisories (1)

npmGHSA-xxxq-chmp-67g4critical

RSA PKCS#1 decryption vulnerability with prepending zeros in jsrsasign

Jun 26, 2020

References

github.com / kjur/jsrsasign/issues/439
ExploitIssue TrackingThird Party Advisory
github.com / kjur/jsrsasign/releases/tag/8.0.17
Release NotesThird Party Advisory
github.com / kjur/jsrsasign/releases/tag/8.0.18
Release NotesThird Party Advisory
kjur.github.io / jsrsasign
Release NotesThird Party Advisory
security.netapp.com / advisory/ntap-20200724-0001
Third Party Advisory
npmjs.com / package/jsrsasign
ProductThird Party Advisory