How severe is CVE-2018-4847?

CVE-2018-4847 has a CVSS 3.x base score of 4.6, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2018-4847 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-4847?

CVE-2018-4847 affects Siemens Simatic Wincc Oa Operator. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-4847?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-4847 published?

CVE-2018-4847 was published on 2018-04-23 and last updated on 2026-06-17.

CVE-2018-4847

CVE-2018-4847 is a medium-severity vulnerability in Siemens Simatic Wincc Oa Operator with a CVSS 3.x base score of 4.6. 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-311.

Key facts

Severity: Medium (CVSS 3.x base score 4.6)
CVSS v2: 2.1
EPSS exploit prediction: 0% (19th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-311
Affected product: Siemens Simatic Wincc Oa Operator
Published: 2018-04-23
Last modified: 2026-06-17

Description

A vulnerability has been identified in SIMATIC WinCC OA Operator iOS App (All versions < V1.4). Insufficient protection of sensitive information (e.g. session key for accessing server) in Siemens WinCC OA Operator iOS app could allow an attacker with physical access to the mobile device to read unencrypted data from the app's directory. Siemens provides mitigations to resolve the security issue.

Frequently asked questions

What is CVE-2018-4847?: A vulnerability has been identified in SIMATIC WinCC OA Operator iOS App (All versions < V1.4). Insufficient protection of sensitive information (e.g. session key for accessing server) in Siemens WinCC OA Operator iOS app could allow an attacker with physical access to the mobile device to read unencrypted data from the app's directory. Siemens provides mitigations to resolve the security issue.
How severe is CVE-2018-4847?: CVE-2018-4847 has a CVSS 3.x base score of 4.6, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2018-4847 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-4847?: CVE-2018-4847 affects Siemens Simatic Wincc Oa Operator. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-4847?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-4847 published?: CVE-2018-4847 was published on 2018-04-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:siemens:simatic_wincc_oa_operator:-:*:*:*:*:iphone_os:*:*

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