How severe is CVE-2017-9434?

CVE-2017-9434 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2017-9434 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-9434?

CVE-2017-9434 affects Cryptopp Crypto++. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-9434?

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

When was CVE-2017-9434 published?

CVE-2017-9434 was published on 2017-06-05 and last updated on 2026-06-17.

CVE-2017-9434

CVE-2017-9434 is a medium-severity vulnerability in Cryptopp Crypto++ with a CVSS 3.x base score of 5.3. 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-125.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-125
Affected product: Cryptopp Crypto++
Published: 2017-06-05
Last modified: 2026-06-17

Description

Crypto++ (aka cryptopp) through 5.6.5 contains an out-of-bounds read vulnerability in zinflate.cpp in the Inflator filter.

Frequently asked questions

What is CVE-2017-9434?: Crypto++ (aka cryptopp) through 5.6.5 contains an out-of-bounds read vulnerability in zinflate.cpp in the Inflator filter.
How severe is CVE-2017-9434?: CVE-2017-9434 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2017-9434 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-9434?: CVE-2017-9434 affects Cryptopp Crypto++. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-9434?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-9434 published?: CVE-2017-9434 was published on 2017-06-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:cryptopp:crypto\+\+:*:*:*:*:*:*:*:*

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