01 Record
CVE-2026-48859
SSH server timing side-channel in ssh_auth:check_password/3 allows unauthenticated username enumeration
MediumPUBLISHEDCNA: EEF
CNA base score6.3 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
02 Description
SSH server timing side-channel in ssh_auth:check_password/3 allows unauthenticated username enumeration
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.35% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 28.8% of scored records. A rank, not a probability.
- NVD base score
- 6.3 (CVSS v4.0), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- NVD analysis status
- Modified. NVD last modified this record on 2026-10-26.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-06-10 14:35Z4 MO AGO
- Last updated
- 2026-09-08 01:05Z1 MO AGO
- Reserved
- 2026-05-25
- Assigning CNA
- EEF
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 6.3)
- CNA CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
- Weaknesses
- CWE-208Observable Timing DiscrepancyBase
- Data version
- 5.2
- Document digest
- 1e1f381d526d8c705a97cef15edb0a55d1f3e6dd01178da6cb449eb395345d30
05 Affected products
VendorProductVersionsPlatforms
ErlangOTP29.0 to < 29.0.2, 6.0 to < 6.0.1, 032d1bc9491a3975c68faf9bc7776115d6ae3005 to < c342092ef4b369bb409d5b71ac8fd83bab74aedf—
06 References
- github.comhttps://github.com/erlang/otp/security/advisories/GHSA-3w6p-vwhf-wvp4
- cna.erlef.orghttps://cna.erlef.org/cves/CVE-2026-48859.html
- osv.devhttps://osv.dev/vulnerability/EEF-CVE-2026-48859
- www.erlang.orghttps://www.erlang.org/doc/system/versions.html#order-of-versions
- github.comhttps://github.com/erlang/otp/commit/c342092ef4b369bb409d5b71ac8fd83bab74aedf
07 Fixed in
Ubuntu 25.10
- erlang No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.