VDB-340388 · CVE-2026-22700 · GHSA-j9xq-69pf-pcm8

RustCrypto elliptic-curves 0.14.0-pre.0/0.14.0-rc.0 decrypt denial of service

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.3	$0-$5k	0.00

Summaryinfo

A vulnerability was found in RustCrypto elliptic-curves 0.14.0-pre.0/0.14.0-rc.0. It has been declared as problematic. This issue affects the function decrypt. Such manipulation leads to denial of service. This vulnerability is listed as CVE-2026-22700. The attack may be performed from remote. There is no available exploit. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in RustCrypto elliptic-curves 0.14.0-pre.0/0.14.0-rc.0. It has been rated as problematic. Affected by this issue is the function decrypt. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. CVE summarizes:

RustCrypto: Elliptic Curves is general purpose Elliptic Curve Cryptography (ECC) support, including types and traits for representing various elliptic curve forms, scalars, points, and public/secret keys composed thereof. In versions 0.14.0-pre.0 and 0.14.0-rc.0, a denial-of-service vulnerability exists in the SM2 public-key encryption (PKE) implementation: the decrypt() path performs unchecked slice::split_at operations on input buffers derived from untrusted ciphertext. An attacker can submit short/undersized ciphertext or carefully-crafted DER-encoded structures to trigger bounds-check panics (Rust unwinding) which crash the calling thread or process. This issue has been patched via commit e60e991.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-22700 since 01/08/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1499.

Applying the patch e60e99167a9a2b187ebe80c994c5204b0fdaf4ab is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-1874). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

RustCrypto

Name

elliptic-curves

Version

License

open-source

Website

Product: https://github.com/RustCrypto/elliptic-curves/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (GitHub_M): 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: e60e99167a9a2b187ebe80c994c5204b0fdaf4ab

Timelineinfo

01/08/2026 CVE reserved
01/10/2026 +2 days Advisory disclosed
01/10/2026 +0 days VulDB entry created
01/11/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-j9xq-69pf-pcm8
Status: Confirmed

CVE: CVE-2026-22700 (🔒)
GCVE (CVE): GCVE-0-2026-22700
GCVE (VulDB): GCVE-100-340388
EUVD: 🔒

Entryinfo

Created: 01/10/2026 10:20
Updated: 01/11/2026 00:53
Changes: 01/10/2026 10:20 (66), 01/11/2026 00:53 (1)
Complete: 🔍
Cache ID: 216::103