How severe is CVE-2022-30295?

CVE-2022-30295 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.

Is CVE-2022-30295 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 11% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-30295?

CVE-2022-30295 primarily affects Uclibc. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-30295?

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

When was CVE-2022-30295 published?

CVE-2022-30295 was published on 2022-05-06 and last updated on 2026-06-17.

CVE-2022-30295

CVE-2022-30295 is a medium-severity vulnerability in Uclibc with a CVSS 3.x base score of 6.5. Its EPSS exploit-prediction score of 11% places it in the 95th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-330.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.0
EPSS exploit prediction: 11% (95th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-330
Affected product: Uclibc
Published: 2022-05-06
Last modified: 2026-06-17

Description

uClibc-ng through 1.0.40 and uClibc through 0.9.33.2 use predictable DNS transaction IDs that may lead to DNS cache poisoning. This is related to a reset of a value to 0x2.

Frequently asked questions

What is CVE-2022-30295?: uClibc-ng through 1.0.40 and uClibc through 0.9.33.2 use predictable DNS transaction IDs that may lead to DNS cache poisoning. This is related to a reset of a value to 0x2.
How severe is CVE-2022-30295?: CVE-2022-30295 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.
Is CVE-2022-30295 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 11% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-30295?: CVE-2022-30295 primarily affects Uclibc. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-30295?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-30295 published?: CVE-2022-30295 was published on 2022-05-06 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:uclibc:uclibc:*:*:*:*:*:*:*:*
cpe:2.3:a:uclibc-ng_project:uclibc-ng:*:*:*:*:*:*:*:*

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CVE-2022-29503 — Critical (CVSS 9.8): A memory corruption vulnerability exists in the libpthread linuxthreads functionality of uClibC 0.9.33.2 and uClibC-ng…
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CVE-2021-43523 — Critical (CVSS 9.6): In uClibc and uClibc-ng before 1.0.39, incorrect handling of special characters in domain names returned by DNS servers…
CVE-2017-9729 — High (CVSS 7.5): In uClibc 0.9.33.2, there is stack exhaustion (uncontrolled recursion) in the check_dst_limits_calc_pos_1 function in…
CVE-2016-6264 — High (CVSS 7.5): Integer signedness error in libc/string/arm/memset.S in uClibc and uClibc-ng before 1.0.16 allows context-dependent…

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