Security readout for executives and security teams
Plain-English summary
CVE-2022-43250 is a memory-safety flaw in libde265 v1.0.8, a library for decoding HEVC/H.265 video. A specially crafted video file can crash software using the library, creating a denial-of-service risk. The provided sources do not indicate data theft, code execution, or confirmed active exploitation.
Executive priority
Handle as a moderate availability issue. It matters most for organizations that process external video content, where crashes can disrupt services or workflows. It is less urgent for systems without libde265 or without untrusted video decoding, but vendor patch status should still be verified.
Technical view
The flaw is a heap buffer overflow, CWE-787, in put_qpel_0_0_fallback_16 within fallback-motion.cc. CVSS 3.1 is 6.5 with network attack vector, low complexity, no privileges, user interaction required, and high availability impact. Debian published security updates through DSA-5346 and DLA-3280-1.
Likely exposure
Exposure is most likely where libde265 v1.0.8, or affected distro packages, process untrusted HEVC/H.265 video files. Risk is higher for media services, upload pipelines, desktop previewers, and applications that automatically decode user-supplied video. The CVE affected-product metadata is incomplete.
Exploitation context
The source bundle does not show CISA KEV listing or other evidence of active exploitation. Practical exploitation requires getting a vulnerable decoder to process a crafted video file. The documented impact is denial of service, not confidentiality or integrity compromise.
Researcher notes
The CVE record names libde265 v1.0.8 and the vulnerable function, but its structured affected-product data is sparse. Debian advisories confirm downstream security updates. Avoid assuming broader products or exploitability beyond denial of service unless additional vendor evidence supports it.
Mitigation direction
- Apply Debian security updates referenced in DSA-5346 or DLA-3280-1 where applicable.
- Check upstream libde265 and OS vendor guidance for fixed versions outside Debian.
- Prioritize systems that process uploaded, emailed, or externally supplied video files.
- Limit automatic decoding of untrusted HEVC/H.265 media until patched.
- Reduce exposure of public media-processing services that depend on libde265.
Validation and detection
- Inventory applications and packages that include or link libde265.
- Identify any libde265 v1.0.8 deployments or affected distro package versions.
- Confirm patched package status against Debian DSA-5346 or local vendor advisories.
- Review media-processing paths for untrusted HEVC/H.265 input handling.
- Check crash telemetry for decoder failures tied to HEVC/H.265 files.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-787: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2022-43250 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H2.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/strukturag/libde265/issues/346CVE reference
- [debian-lts-announce] 20230124 [SECURITY] [DLA 3280-1] libde265 security updateCVE reference · mailing-list
- DSA-5346CVE reference · vendor-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.