HOMEVULNERABILITIESCVE-2021-36218
HIGH

CVE-2021-36218

CWE-787Published: September 27, 2021· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

An issue was discovered in SKALE sgxwallet 1.58.3. sgx_disp_ippsAES_GCMEncrypt allows an out-of-bounds write, resulting in a segfault and compromised enclave. This issue describes a buffer overflow, which was resolved prior to v1.77.0 and not reproducible in latest sgxwallet v1.77.0

NVD Source

Technical Analysis

CVE-2021-36218 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.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.

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

skale1 product(s)
sgxwallet
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
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/skalenetwork/sgxwallet/commit/77425c862ad20cd270d42c54f3d63e1eb4e02195
PATCHhttps://github.com/skalenetwork/sgxwallet/commit/77425c862ad20cd270d42c54f3d63e1eb4e02195
ADVISORYhttps://github.com/skalenetwork/sgxwallet/releases
ADVISORYhttps://github.com/skalenetwork/sgxwallet/releases

All References (4)

→
https://github.com/skalenetwork/sgxwallet/commit/77425c862ad20cd270d42c54f3d63e1eb4e02195Patch · Third Party Advisory
→
https://github.com/skalenetwork/sgxwallet/releasesRelease Notes · Third Party Advisory
→
https://github.com/skalenetwork/sgxwallet/commit/77425c862ad20cd270d42c54f3d63e1eb4e02195Patch · Third Party Advisory
→
https://github.com/skalenetwork/sgxwallet/releasesRelease Notes · Third Party Advisory

Quick Facts

CVE IDCVE-2021-36218
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-787
CISA KEVNo
Affected1 vendor(s)
PublishedSep 27, 2021

Related CVEs (CWE-787)

CVE-2004-1287
10.0
CVE-2009-2466
10.0
CVE-2022-30292
10.0
CVE-2020-11897
10.0
CVE-2018-10718
10.0
CVE-2013-5610
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-36218 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.COM. CVE data is provided under the NVD usage policy.
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