CVE-2021-37606
CVE-2021-37606 is a medium-severity vulnerability in Meow Hash Project Meow Hash 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-203.
Key facts
- Severity: Medium (CVSS 3.x base score 5.3)
- CVSS v2: 5.0
- EPSS exploit prediction: 1% (50th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-203
- Affected product: Meow Hash Project Meow Hash
- Published:
- Last modified:
Description
Meow hash 0.5/calico does not sufficiently thwart key recovery by an attacker who can query whether there's a collision in the bottom bits of the hashes of two messages, as demonstrated by an attack against a long-running web service that allows the attacker to infer collisions by measuring timing differences.
Frequently asked questions
- What is CVE-2021-37606?
- Meow hash 0.5/calico does not sufficiently thwart key recovery by an attacker who can query whether there's a collision in the bottom bits of the hashes of two messages, as demonstrated by an attack against a long-running web service that allows the attacker to infer collisions by measuring timing differences.
- How severe is CVE-2021-37606?
- CVE-2021-37606 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-2021-37606 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-37606?
- CVE-2021-37606 affects Meow Hash Project Meow Hash. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-37606?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-37606 published?
- CVE-2021-37606 was published on 2021-07-30 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:meow_hash_project:meow_hash:0.5:*:*:*:*:*:*:*
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