CVE-2021-43086
CVE-2021-43086 is a critical-severity vulnerability in Arm Adaptive Scalable Texture Compression Encoder 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: 7.5
- EPSS exploit prediction: 1% (65th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: Arm Adaptive Scalable Texture Compression Encoder
- Published:
- Last modified:
Description
ARM astcenc 3.2.0 is vulnerable to Buffer Overflow. When the compression function of the astc-encoder project with -cl option was used, a stack-buffer-overflow occurred in function encode_ise() in function compress_symbolic_block_for_partition_2planes() in "/Source/astcenc_compress_symbolic.cpp".
Frequently asked questions
- What is CVE-2021-43086?
- ARM astcenc 3.2.0 is vulnerable to Buffer Overflow. When the compression function of the astc-encoder project with -cl option was used, a stack-buffer-overflow occurred in function encode_ise() in function compress_symbolic_block_for_partition_2planes() in "/Source/astcenc_compress_symbolic.cpp".
- How severe is CVE-2021-43086?
- CVE-2021-43086 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-2021-43086 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-43086?
- CVE-2021-43086 affects Arm Adaptive Scalable Texture Compression Encoder. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-43086?
- 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-2021-43086 published?
- CVE-2021-43086 was published on 2022-02-28 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:arm:adaptive_scalable_texture_compression_encoder:3.2.0:*:*:*:*:*:*:*
More vulnerabilities in Arm Adaptive Scalable Texture Compression Encoder
- CVE-2021-44331 — High (CVSS 7.8): ARM astcenc 3.2.0 is vulnerable to Buffer Overflow in function encode_ise().
All CVEs affecting Arm Adaptive Scalable Texture Compression Encoder →
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