CVE-2023-36198: Buffer Overflow vulnerability in skalenetwork sgxwallet v.1.9.0 allows an attacker to cause a denial of servic

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HIGH 7.5REMOTEDOWNGRADE

CVE-2023-36198 is a high-severity flaw (CVSS 7.5) affecting sgxwallet. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer Overflow vulnerability in skalenetwork sgxwallet v.1.9.0 allows an attacker to cause a denial of service via the trustedBlsSignMessage function.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 38%)
CISA exploited list	No
Weakness	CWE-120
Published	2023-08-25
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: skale

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-08-25 20:15 UTCPublished CVE record published
2026-06-17 06:05 UTCUpdated Record last modified

skale sgxwallet DOWNGRADE

Affected: 1.9.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.9.0

1. Check installed version

apt-cache policy sgxwallet || rpm -q sgxwallet || sgxwallet --version

2. No fixed release: DOWNGRADE to a release before 1.9.0 (Debian / Ubuntu)

apt-cache madison sgxwallet sudo apt install sgxwallet=<VERSION_BEFORE_1.9.0> sudo apt-mark hold sgxwallet

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list sgxwallet sudo dnf downgrade sgxwallet-<VERSION_BEFORE_1.9.0> sudo dnf versionlock add sgxwallet

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-36198?

sgxwallet: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-36198 being exploited?

CVE-2023-36198 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-36198 affect?

CVE-2023-36198 affects sgxwallet. Severity is high (CVSS 7.5). Buffer Overflow vulnerability in skalenetwork sgxwallet v.1.9.0 allows an attacker to cause a denial of service via the trustedBlsSignMessage function.

How urgent is CVE-2023-36198?

Priority 52/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2023-36199 HIGH 7.5 UPGRADE An issue in skalenetwork sgxwallet v.1.9.0 and below allows an attacker to cause a denial of service via the t

References

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