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CVE Record

CVE-2022-43249: Libde265 v1.0.8 was discovered to contain a heap-buffer-overflow vulnerability via put_epel_hv_fallback<uns...

Libde265 v1.0.8 was discovered to contain a heap-buffer-overflow vulnerability via put_epel_hv_fallback<unsigned short> in fallback-motion.cc. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted video file.

MediumCVSS 6.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2022-43249 is a memory safety flaw in libde265 v1.0.8, a video decoding library. A crafted video file can crash software that processes it, causing denial of service. The sources do not show data theft, code execution, or active exploitation.

Executive priority

Treat this as a moderate operational-risk issue. Prioritize patching internet-facing or user-upload media processing paths, because the likely business impact is service disruption rather than confidentiality loss.

Technical view

The flaw is a CWE-787 heap-buffer-overflow in fallback-motion.cc, specifically put_epel_hv_fallback<unsigned short>. CVSS 3.1 is 6.5 with network attack vector, low complexity, no privileges, required user interaction, and high availability impact only.

Likely exposure

Exposure is most likely where libde265 v1.0.8 or affected distro packages decode untrusted HEVC/H.265 video content. This may include applications, services, or media pipelines that ingest user-supplied video files. The provided affected-product metadata is incomplete.

Exploitation context

The cited CVE describes denial of service through a crafted video file. User interaction is required under the CVSS vector. The CVE is not listed as KEV, and the provided sources do not claim active exploitation.

Researcher notes

Evidence supports a heap-buffer-overflow DoS in libde265 v1.0.8, but the structured affected-product data is sparse. Debian issued security updates in January 2023. No source in the bundle supports active exploitation or a confidentiality/integrity impact.

Mitigation direction

  • Inventory systems and applications using libde265 or distro packages built from it.
  • Apply vendor or distribution security updates for libde265, including Debian advisories where applicable.
  • Limit processing of untrusted video files until affected deployments are updated.
  • Monitor upstream libde265 and OS vendor guidance for additional affected-version details.

Validation and detection

  • Confirm whether libde265 v1.0.8 or vulnerable distro builds are installed.
  • Review dependency manifests, container images, and OS package inventories for libde265.
  • Verify vendor security updates are installed after remediation.
  • Test media-processing workflows for availability failures using safe, non-offensive regression cases.
Prepared
Confidence
medium
Sources
5

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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 · low confidence lookup

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.

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cve · low confidence lookup

CVE-2022-43249 mapping review

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Vulnerability profileCVE Program record
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

Official CVE source material

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.

1CVSS vectors
0Timeline events
0ADP providers
4Source links

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
6.5CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H2.83.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

6.5Medium
CVSS 3.1 vector shape for CVE-2022-43249Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

CWE-787

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-787 · source CWE mapping

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.

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