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CVE-2026-22699

25
FAUCET Score

CVE-2026-22699 is a denial-of-service vulnerability affecting RustCrypto's SM2 Elliptic Curve Cryptography library versions 0.14.0-pre.0 and 0.14.0-rc.0. An attacker can trigger a panic by providing a specially crafted, invalid elliptic-curve point during SM2 PKE decryption. This vulnerability has a CVSS score of 7.5 (HIGH), indicating a network-based attack with low complexity and high impact on availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
0.14.0CPE matchmatch criteria
cpe:2.3:a:rustcrypto:sm2_elliptic_curve:0.14.0:pre0:*:*:*:rust:*:*
0.14.0CPE matchmatch criteria
cpe:2.3:a:rustcrypto:sm2_elliptic_curve:0.14.0:rc0:*:*:*:rust:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.38%
Probability of exploitation in next 30 days
EPSS Percentile
30.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0037 is in the 10th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

rustGHSA-78p6-6878-8mj6high

SM2-PKE has Unchecked AffinePoint Decoding (unwrap) in decrypt()

Jan 9, 2026

References

github.com / RustCrypto/elliptic-curves/commit/085b7bee647029bd189e1375203418205006bcab
Patch
github.com / RustCrypto/elliptic-curves/pull/1602
Issue TrackingPatch
github.com / RustCrypto/elliptic-curves/security/advisories/GHSA-78p6-6878-8mj6
ExploitVendor Advisory