Security readout for executives and security teams
Plain-English summary
UnEGG 0.5 on Linux can mishandle a malformed EGG archive and trigger an integer overflow. If a user opens the file with the vulnerable tool, an attacker could run arbitrary code with that user's privileges. This is high impact but requires user interaction.
Executive priority
Treat this as a high-priority endpoint and processing-tool risk, especially where staff or services handle archives from outside the organization. It is not described as remotely exploitable without user interaction, but successful exploitation could fully compromise the affected user context.
Technical view
CVE-2020-7860 is a CWE-190 integer overflow in Estsoft UnEGG 0.5, affecting versions prior to 1.0 on Linux. The CVSS 3.1 score is 7.8, with local attack vector, low complexity, no privileges required, and required user interaction. Impact is high for confidentiality, integrity, and availability.
Likely exposure
Exposure is most likely on Linux systems where UnEGG 0.5 is installed or invoked to open EGG archives, including desktop workflows or backend archive-processing paths.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. Exploitation depends on a malformed file being opened by the vulnerable UnEGG version.
Researcher notes
Available sources are sparse. The record identifies the vulnerable product, platform, version range, weakness class, and CVSS vector, but does not provide root-cause detail, proof-of-concept status, or a named vendor advisory beyond the ALTools download reference.
Mitigation direction
- Inventory Linux systems for UnEGG 0.5 or versions earlier than 1.0.
- Upgrade or replace vulnerable UnEGG installations using Estsoft guidance where available.
- Restrict opening untrusted EGG archives until remediation is complete.
- Disable automated processing of user-supplied EGG files by vulnerable tooling.
- Monitor vendor download or advisory channels for supported fixed releases.
Validation and detection
- Confirm installed UnEGG versions on Linux hosts and developer workstations.
- Identify workflows that open or process EGG archives from external sources.
- Verify archive-processing services do not call vulnerable UnEGG binaries.
- Confirm remediation moved systems off versions earlier than 1.0.
- Check security logs for suspicious archive-opening events if exposure existed.
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-190: 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2020-7860 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
- High
- CVSS
- 7.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/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:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H1.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.altools.co.kr/Download/ALZip.aspxCVE reference · x_refsource_MISC
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.
Integer Overflow or Wraparound
Integer Overflow or Wraparound represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.