HOMEVULNERABILITIESCVE-2026-22700
HIGH

CVE-2026-22700

CWE-20Published: January 10, 2026· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2026-22700 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

rustcrypto1 product(s)
sm2 elliptic curve
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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Official Patches & Advisories

PATCHhttps://github.com/RustCrypto/elliptic-curves/commit/e60e99167a9a2b187ebe80c994c5204b0fdaf4ab
PATCHhttps://github.com/RustCrypto/elliptic-curves/pull/1603
ADVISORYhttps://github.com/RustCrypto/elliptic-curves/security/advisories/GHSA-j9xq-69pf-pcm8
ADVISORYhttps://github.com/RustCrypto/elliptic-curves/security/advisories/GHSA-j9xq-69pf-pcm8

All References (4)

→
https://github.com/RustCrypto/elliptic-curves/commit/e60e99167a9a2b187ebe80c994c5204b0fdaf4abPatch
→
https://github.com/RustCrypto/elliptic-curves/pull/1603Patch
→
https://github.com/RustCrypto/elliptic-curves/security/advisories/GHSA-j9xq-69pf-pcm8Exploit · Vendor Advisory
→
https://github.com/RustCrypto/elliptic-curves/security/advisories/GHSA-j9xq-69pf-pcm8Exploit · Vendor Advisory

Quick Facts

CVE IDCVE-2026-22700
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-20
CISA KEVNo
Affected1 vendor(s)
PublishedJan 10, 2026

Related CVEs (CWE-20)

CVE-2013-1710
10.0
CVE-2011-0285
10.0
CVE-2011-0922
10.0
CVE-2007-4915
10.0
CVE-2011-1018
10.0
CVE-2008-4509
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-22700 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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