How severe is CVE-2019-9729?

CVE-2019-9729 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-9729 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-9729?

CVE-2019-9729 affects Shanda Maplestory Online. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-9729?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2019-9729 published?

CVE-2019-9729 was published on 2019-03-12 and last updated on 2026-06-17.

CVE-2019-9729

CVE-2019-9729 is a high-severity vulnerability in Shanda Maplestory Online with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-129.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 7.2
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-129
Affected product: Shanda Maplestory Online
Published: 2019-03-12
Last modified: 2026-06-17

Description

In Shanda MapleStory Online V160, the SdoKeyCrypt.sys driver allows privilege escalation to NT AUTHORITY\SYSTEM because of not validating the IOCtl 0x8000c01c input value, leading to an integer signedness error and a heap-based buffer underflow.

Frequently asked questions

What is CVE-2019-9729?: In Shanda MapleStory Online V160, the SdoKeyCrypt.sys driver allows privilege escalation to NT AUTHORITY\SYSTEM because of not validating the IOCtl 0x8000c01c input value, leading to an integer signedness error and a heap-based buffer underflow.
How severe is CVE-2019-9729?: CVE-2019-9729 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-9729 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-9729?: CVE-2019-9729 affects Shanda Maplestory Online. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-9729?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-9729 published?: CVE-2019-9729 was published on 2019-03-12 and last updated on 2026-06-17.

References

https://github.com/DoubleLabyrinth/SdoKeyCrypt-sys-local-privilege-elevation

Affected products (1)

cpe:2.3:a:shanda:maplestory_online:160.0:*:*:*:*:*:*:*

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