SerenityOS Unspecified is affected by: Buffer Overflow.
Priority LOW 36CWE-120Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
SerenityOS Unspecified is affected by: Buffer Overflow. The impact is: obtain sensitive information (context-dependent). The component is: /Userland/Libraries/LibCrypto/ASN1/DER.h Crypto::der_decode_sequence() function. The attack vector is: Parsing RSA Key ASN.1.
Why it matters now
EPSS 0.01673 76th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:serenityos:serenityos:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Serenityos |
- cpe:2.3:o:serenityos:serenityos:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Serenityos
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-27343
- 2026-10-03 Alias added: GHSA-4v56-mrhv-6j2m
References
More Serenityos vulnerabilities
- TI-2021-11461 SerenityOS before commit 3844e85 contains a directory… CVSS 3.1CRITICAL 9.8
- TI-2021-03185 SerenityOS TypedArray.cpp initialize_typed_array_from_array_buffer integer overflow CVSS 3.1CRITICAL 9.8
- TI-2021-10634 SerenityOS 2021-03-27 contains a buffer overflow vulnerability in the EndOfCentralDirectory::read() function. CVSS 3.1CRITICAL 9.1
- TI-2021-09844 SerenityOS fixed as of c9f25bc contains a buffer… CVSS 3.1HIGH 7.8
- TI-2021-12737 SerenityOS in test-crypto.cpp contains a stack buffer overflow which could allow… CVSS 3.1HIGH 7.5
- TI-2021-12736 SerenityOS contains a buffer overflow in the set_range test in TestBitmap which could… CVSS 3.1HIGH 7.5
Sources
- CVE-2021-27343 · CVE Program
- CVE-2021-27343 · NVD
- FIRST EPSS
- GHSA-4v56-mrhv-6j2m · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences