Security readout for executives and security teams
CVE-2023-26818 describes a privacy-permission bypass in Telegram 9.3.1 and 9.4.0. A local low-privileged attacker could potentially use Telegram’s existing permissions to access restricted files, microphone, or camera data. The source bundle does not show active exploitation or a confirmed vendor fix. Exposure appears limited to systems running Telegram 9.3.1 or 9.4.0 where a local low-privileged attacker or process can attempt to abuse Telegram’s permissions. The CVE record’s affected vendor/product fields are incomplete, so version scoping should be verified against vendor guidance. Treat as a targeted endpoint privacy risk, not a broad remote compromise. Prioritize regulated, executive, developer, and sensitive-user workstations where Telegram is installed and has privacy permissions. Mitigation focus: Inventory endpoints for Telegram 9.3.1 and 9.4.0.; Check Telegram vendor guidance for fixed versions or advisories.; Upgrade or remove affected versions where confirmed by vendor guidance..
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
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ATT&CK lookup starting points
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CWE-863: Authorization and privilege behavior lookup
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Open ATT&CK lookupCVE-2023-26818 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
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.
SSVC decision data
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:L/UI:N/S:U/C:H/I:N/A:N1.83.6CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://danrevah.github.io/2023/05/15/CVE-2023-26818-Bypass-TCC-with-Telegram/CVE reference, mitre
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.
Incorrect Authorization
Incorrect Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.