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CVE-2010-0577
Cisco IOS 12.2 through 12.4, when certain PMTUD, SNAT, or window-size configurations are used, allows remote attackers to cause a denial…
- 7.1HighCVSS base score
- 2.5%Exploitation in 30 daysEPSS · top 15% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Cisco IOS 12.2 through 12.4, when certain PMTUD, SNAT, or window-size configurations are used, allows remote attackers to cause a denial of service (infinite loop, and device reload or hang) via a TCP segment with crafted options, aka Bug ID CSCsz75186.
Timeline
ID reserved
By cisco
- 43 days later
· 43 days later
Published
- 14 years later
· 14 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 | High7.1 | AV:N/AC:M/Au:N/C:N/I:N/A:C |
- EPSS (exploitation in 30 days)
- 2.5% · top 15% 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: High 7.1.
Affected products
n/a
- affected n/a
References
7
- 38930 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 20100324 Cisco IOS Software Crafted TCP Packet Denial of Service Vulnerability (opens in a new tab)vendor-advisoryx_refsource_CISCOx_transferred
- 1023743 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- 39078 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- ADV-2010-0703 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- ciscoios-tcpsegment-dos(57129) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 63178 (opens in a new tab)vdb-entryx_refsource_OSVDBx_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-2010-0608 (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-2010-0577)Record last updated .