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CVE Record

CVE-2018-10999: An issue was discovered in Exiv2 0.26.

An issue was discovered in Exiv2 0.26. The Exiv2::Internal::PngChunk::parseTXTChunk function has a heap-based buffer over-read.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2018-10999 is a memory-reading flaw in Exiv2 0.26, a library/tool used to inspect image metadata. A crafted PNG metadata field could make affected code read past allocated heap memory. The provided sources do not include a CVSS score or confirmed business impact.

Executive priority

Handle through normal vulnerability management, with faster action for exposed upload or media-processing services. The urgency is constrained by missing severity data and no cited active exploitation, but vendor advisories justify patching.

Technical view

The flaw is a heap-based buffer over-read in Exiv2::Internal::PngChunk::parseTXTChunk. The source bundle names Exiv2 0.26 and references Ubuntu, Debian, Debian LTS, Gentoo, and upstream issue tracking. No affected CPEs, CVSS vector, or CWE mapping are provided.

Likely exposure

Exposure is most likely where Exiv2 0.26, or distribution packages containing that vulnerable code, processes PNG files or image metadata. Risk is higher for services that accept untrusted image uploads or automatically index user-supplied media.

Exploitation context

The provided bundle does not show CISA KEV listing or other cited evidence of active exploitation. The GitHub issue and Linux distribution advisories indicate public disclosure and vendor remediation activity, but not weaponized exploitation.

Researcher notes

Do not assume broader product impact beyond Exiv2 0.26 and distribution packages referenced by the advisories. The bundle lacks CVSS, CWE, fixed-version details, and exploit status beyond KEV=false, so validation should focus on package provenance and vendor advisory mapping.

Mitigation direction

  • Inventory systems and applications using Exiv2 or distro exiv2 packages.
  • Apply relevant Ubuntu, Debian, Debian LTS, or Gentoo security updates.
  • For other platforms, check current Exiv2 or vendor guidance.
  • Limit automated processing of untrusted PNG files until updated.
  • Prioritize internet-facing upload and media-processing workflows first.

Validation and detection

  • Confirm installed Exiv2 package versions against vendor advisory fixed versions.
  • Identify applications that invoke Exiv2 directly or through image pipelines.
  • Review upload, indexing, and metadata extraction paths for untrusted PNG handling.
  • Verify patched hosts no longer report vulnerable Exiv2 builds.
  • Document exceptions where vendor guidance is unavailable or unsupported.
Prepared
Confidence
medium
Sources
8

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.

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CVE-2018-10999 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
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.

0CVSS vectors
0Timeline events
0ADP providers
7Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

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