Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-22700— RustCrypto Has Insufficient Length Validation in decrypt() in SM2-PKE

Quick assessment

Affected
RustCrypto elliptic-curves
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

RustCrypto: Elliptic Curves是Rust Crypto开源的一个Rust加密库。 RustCrypto: Elliptic Curves 0.14.0-pre.0版本和0.14.0-rc.0版本存在输入验证错误漏洞，该漏洞源于SM2公钥加密实现中对源自不受信任密文的输入缓冲区执行未检查的切片分割操作，可能导致拒绝服务攻击。

CVSS 7.5 · High EPSS 0.30% · P21
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-22700

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
RustCrypto Has Insufficient Length Validation in decrypt() in SM2-PKE
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
RustCrypto: Elliptic Curves 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
RustCrypto: Elliptic Curves是Rust Crypto开源的一个Rust加密库。 RustCrypto: Elliptic Curves 0.14.0-pre.0版本和0.14.0-rc.0版本存在输入验证错误漏洞，该漏洞源于SM2公钥加密实现中对源自不受信任密文的输入缓冲区执行未检查的切片分割操作，可能导致拒绝服务攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
RustCrypto elliptic-curves = 0.14.0-pre.0 -

II. Public POCs for CVE-2026-22700

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 11052 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-22700

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-22700 (1)

Same Patch Batch · RustCrypto · 2026-01-10 · 4 CVEs total

CVE-2026-22699 7.5 HIGH RustCrypto SM2-PKE has Unchecked AffinePoint Decoding (unwrap) in decrypt()
CVE-2026-22705 6.4 MEDIUM RustCrypto: Signatures has timing side-channel in ML-DSA decomposition
CVE-2026-22698 RustCrypto SM2-PKE has 32-bit Biased Nonce Vulnerability

IV. Related Vulnerabilities

Same product: elliptic-curves
Same vendor: RustCrypto
Same weakness: CWE-20

V. Comments for CVE-2026-22700

No comments yet

Leave a comment