How severe is CVE-2021-35522?

CVE-2021-35522 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-35522 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-35522?

CVE-2021-35522 primarily affects Idemia Morphowave Compact Mdpi Firmware. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-35522?

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

When was CVE-2021-35522 published?

CVE-2021-35522 was published on 2021-07-22 and last updated on 2026-06-17.

CVE-2021-35522

CVE-2021-35522 is a critical-severity vulnerability in Idemia Morphowave Compact Mdpi Firmware with a CVSS 3.x base score of 9.8. 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-787.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 9.0
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Idemia Morphowave Compact Mdpi Firmware
Published: 2021-07-22
Last modified: 2026-06-17

Description

A Buffer Overflow in Thrift command handlers in IDEMIA Morpho Wave Compact and VisionPass devices before 2.6.2, Sigma devices before 4.9.4, and MA VP MD devices before 4.9.7 allows remote attackers to achieve code execution, denial of services, and information disclosure via TCP/IP packets.

Frequently asked questions

What is CVE-2021-35522?: A Buffer Overflow in Thrift command handlers in IDEMIA Morpho Wave Compact and VisionPass devices before 2.6.2, Sigma devices before 4.9.4, and MA VP MD devices before 4.9.7 allows remote attackers to achieve code execution, denial of services, and information disclosure via TCP/IP packets.
How severe is CVE-2021-35522?: CVE-2021-35522 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-35522 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-35522?: CVE-2021-35522 primarily affects Idemia Morphowave Compact Mdpi Firmware. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-35522?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-35522 published?: CVE-2021-35522 was published on 2021-07-22 and last updated on 2026-06-17.

References

Affected products (11)

cpe:2.3:o:idemia:morphowave_compact_mdpi_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:idemia:morphowave_compact_mdpi-m_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:idemia:visionpass_mdpi_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:idemia:visionpass_mdpi-m_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:idemia:visionpass_md_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:idemia:morphowave_compact_md_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:idemia:sigma_lite_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:idemia:sigma_lite\+_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:idemia:sigma_wide_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:idemia:sigma_extreme_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:idemia:ma_vp_md_firmware:-:*:*:*:*:*:*:*

More vulnerabilities in Idemia Morphowave Compact Mdpi Firmware

CVE-2021-35520 — Medium (CVSS 6.2): A Buffer Overflow in Thrift command handlers in IDEMIA Morpho Wave Compact and VisionPass devices before 2.6.2 allows…
CVE-2021-35521 — Medium (CVSS 5.9): A path traversal in Thrift command handlers in IDEMIA Morpho Wave Compact and VisionPass devices before 2.6.2 allows…

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