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CVE-2014-7990
Cisco IOS XE 3.5E and earlier on WS-C3850, WS-C3860, and AIR-CT5760 devices does not properly parse the "request system shell" challenge…
- 6.8MediumCVSS base score
- 0.34%Exploitation in 30 daysEPSS · top 72% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Cisco IOS XE 3.5E and earlier on WS-C3850, WS-C3860, and AIR-CT5760 devices does not properly parse the "request system shell" challenge response, which allows local users to obtain Linux root access by leveraging administrative privilege, aka Bug ID CSCur09815.
Timeline
ID reserved
By cisco
- 30 days later
· 30 days later
Published
- 10 years later
· 10 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium6.8 | AV:L/AC:L/Au:S/C:C/I:C/A:C |
- EPSS (exploitation in 30 days)
- 0.34% · top 72% of all CVEs (10 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.8.
Affected products
n/a
- affected n/a
References
5
- 20141106 Cisco IOS XE Challenge/Response Bypass Vulnerability (opens in a new tab)vendor-advisoryx_refsource_CISCOx_transferred
- http://tools.cisco.com/security/center/viewAlert.x?alertId=36351 (opens in a new tab)x_refsource_CONFIRMx_transferred
- ciscoiosxe-cve20147990-sec-bypass(98529) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 70968 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 1031179 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2014-7839 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2014-7990)Record last updated .