Security readout for executives and security teams
Plain-English summary
TeleMessage exposed sensitive memory content in a JSP-based service. The CVE says that heap data could function like a core dump and include passwords previously sent over HTTP. CISA lists the issue as known exploited, so this is not theoretical.
Executive priority
Treat this as a priority incident review, not just routine patching. The technical score is medium, but KEV status means exploitation is confirmed and password exposure can create downstream account risk.
Technical view
CVE-2025-48928 is a CWE-528 exposure in the TeleMessage service through 2025-05-05. Heap contents could retain passwords sent over HTTP. The record assigns CVSS 4.0 with low confidentiality impact and no integrity or availability impact, but exploitation in the wild is reported.
Likely exposure
Exposure appears limited to organizations using the TeleMessage service through 2025-05-05, especially where passwords were transmitted over HTTP. The source bundle does not identify specific deployments, tenants, versions beyond the service, or a named patched release.
Exploitation context
Active exploitation is supported by both the CVE description and CISA KEV listing, with exploitation reported in May 2025. The provided sources do not include exploit mechanics, attacker identity, or confirmed breadth of compromise.
Researcher notes
The evidence is specific to heap/core-dump-like exposure of passwords previously sent over HTTP. Sources do not name a patch, fixed version, vulnerable endpoint, or reproducible test method, so validation should focus on asset use, credential exposure, and vendor advisories.
Mitigation direction
- Check TeleMessage vendor guidance for patches, service changes, or incident instructions.
- Rotate passwords that may have traversed TeleMessage over HTTP.
- Suspend or restrict TeleMessage use until exposure is assessed.
- Review whether affected accounts reused credentials elsewhere.
- Preserve logs and support notices for incident review.
Validation and detection
- Inventory TeleMessage use through 2025-05-05.
- Confirm whether any authentication flows used HTTP.
- Identify users whose passwords may have entered the service.
- Check CISA KEV and vendor notices for current required actions.
- Review authentication logs for suspicious access after May 2025.
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-528: 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 lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2025-48928 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
- 4 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/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.
CISA KEV status
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:N/S:U/C:L/I:N/A:N2.51.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4MediumVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wired.com/story/how-the-signal-knock-off-app-telemessage-got-hacked-in-20-minutes/CVE reference
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-48928CVE reference · government-resource
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.
Exposure of Core Dump File to an Unauthorized Control Sphere
Exposure of Core Dump File to an Unauthorized Control Sphere represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.