CVE-2017-1000206
CVE-2017-1000206 is a critical-severity vulnerability in Htslib 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-119.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 7.5
- EPSS exploit prediction: 2% (78th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-119
- Affected product: Htslib
- Published:
- Last modified:
Description
samtools htslib library version 1.4.0 and earlier is vulnerable to buffer overflow in the CRAM rANS codec resulting in potential arbitrary code execution
Frequently asked questions
- What is CVE-2017-1000206?
- samtools htslib library version 1.4.0 and earlier is vulnerable to buffer overflow in the CRAM rANS codec resulting in potential arbitrary code execution
- How severe is CVE-2017-1000206?
- CVE-2017-1000206 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-2017-1000206 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2017-1000206?
- CVE-2017-1000206 affects Htslib. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2017-1000206?
- 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-2017-1000206 published?
- CVE-2017-1000206 was published on 2017-11-17 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:htslib:htslib:*:*:*:*:*:*:*:*
More vulnerabilities in Htslib
- CVE-2018-13845 — Critical (CVSS 9.8): An issue has been found in HTSlib 1.8. It is a buffer over-read in sam_parse1 in sam.c.
- CVE-2026-31967 — Critical (CVSS 9.1): HTSlib is a library for reading and writing bioinformatics file formats. CRAM is a compressed format which stores DNA…
- CVE-2026-31966 — Critical (CVSS 9.1): HTSlib is a library for reading and writing bioinformatics file formats. CRAM is a compressed format which stores DNA…
- CVE-2026-31962 — High (CVSS 8.8): HTSlib is a library for reading and writing bioinformatics file formats. CRAM is a compressed format which stores DNA…
- CVE-2020-36403 — High (CVSS 8.8): HTSlib through 1.10.2 allows out-of-bounds write access in vcf_parse_format (called from vcf_parse and vcf_read).
- CVE-2026-31965 — High (CVSS 8.2): HTSlib is a library for reading and writing bioinformatics file formats. CRAM is a compressed format which stores DNA…
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